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Sagot :
Sure, let's solve each of these problems step-by-step. Here are the detailed solutions:
### Problem 13: [tex]\(-528 - (-524)\)[/tex]
1. First, recognize that subtracting a negative number is the same as adding the positive version of that number.
[tex]\[ -528 - (-524) = -528 + 524 \][/tex]
2. Perform the addition.
[tex]\[ -528 + 524 = -4 \][/tex]
Result: [tex]\(-4\)[/tex]
### Problem 14: [tex]\(-624 - (-626)\)[/tex]
1. Again, subtracting a negative number is the same as adding the positive version of that number.
[tex]\[ -624 - (-626) = -624 + 626 \][/tex]
2. Perform the addition.
[tex]\[ -624 + 626 = 2 \][/tex]
Result: [tex]\(2\)[/tex]
### Problem 15: [tex]\(-260 - (-262)\)[/tex]
1. Subtracting a negative number equates to adding the positive version of that number.
[tex]\[ -260 - (-262) = -260 + 262 \][/tex]
2. Perform the addition.
[tex]\[ -260 + 262 = 2 \][/tex]
Result: [tex]\(2\)[/tex]
### Problem 16: [tex]\(-326 - 264\)[/tex]
1. This is a straightforward subtraction problem with both numbers being negative.
[tex]\[ -326 - 264 \][/tex]
2. Combine the negative values.
[tex]\[ -326 - 264 = -590 \][/tex]
Result: [tex]\(-590\)[/tex]
### Problem 17: [tex]\(342 - 26.4\)[/tex]
1. Standard subtraction problem.
[tex]\[ 342 - 26.4 \][/tex]
2. Perform the subtraction.
[tex]\[ 342 - 26.4 = 315.6 \][/tex]
Result: [tex]\(315.6\)[/tex]
### Problem 18: [tex]\(342 - (-642)\)[/tex]
1. Subtracting a negative number is equivalent to adding the positive version of that number.
[tex]\[ 342 - (-642) = 342 + 642 \][/tex]
2. Perform the addition.
[tex]\[ 342 + 642 = 984 \][/tex]
Result: [tex]\(984\)[/tex]
By following these steps, we obtain the results:
[tex]\[ \begin{array}{rcl} \text{13.} & -4 & \\ \text{14.} & 2 & \\ \text{15.} & 2 & \\ \text{16.} & -590 & \\ \text{17.} & 315.6 & \\ \text{18.} & 984 & \\ \end{array} \][/tex]
These are the final answers.
### Problem 13: [tex]\(-528 - (-524)\)[/tex]
1. First, recognize that subtracting a negative number is the same as adding the positive version of that number.
[tex]\[ -528 - (-524) = -528 + 524 \][/tex]
2. Perform the addition.
[tex]\[ -528 + 524 = -4 \][/tex]
Result: [tex]\(-4\)[/tex]
### Problem 14: [tex]\(-624 - (-626)\)[/tex]
1. Again, subtracting a negative number is the same as adding the positive version of that number.
[tex]\[ -624 - (-626) = -624 + 626 \][/tex]
2. Perform the addition.
[tex]\[ -624 + 626 = 2 \][/tex]
Result: [tex]\(2\)[/tex]
### Problem 15: [tex]\(-260 - (-262)\)[/tex]
1. Subtracting a negative number equates to adding the positive version of that number.
[tex]\[ -260 - (-262) = -260 + 262 \][/tex]
2. Perform the addition.
[tex]\[ -260 + 262 = 2 \][/tex]
Result: [tex]\(2\)[/tex]
### Problem 16: [tex]\(-326 - 264\)[/tex]
1. This is a straightforward subtraction problem with both numbers being negative.
[tex]\[ -326 - 264 \][/tex]
2. Combine the negative values.
[tex]\[ -326 - 264 = -590 \][/tex]
Result: [tex]\(-590\)[/tex]
### Problem 17: [tex]\(342 - 26.4\)[/tex]
1. Standard subtraction problem.
[tex]\[ 342 - 26.4 \][/tex]
2. Perform the subtraction.
[tex]\[ 342 - 26.4 = 315.6 \][/tex]
Result: [tex]\(315.6\)[/tex]
### Problem 18: [tex]\(342 - (-642)\)[/tex]
1. Subtracting a negative number is equivalent to adding the positive version of that number.
[tex]\[ 342 - (-642) = 342 + 642 \][/tex]
2. Perform the addition.
[tex]\[ 342 + 642 = 984 \][/tex]
Result: [tex]\(984\)[/tex]
By following these steps, we obtain the results:
[tex]\[ \begin{array}{rcl} \text{13.} & -4 & \\ \text{14.} & 2 & \\ \text{15.} & 2 & \\ \text{16.} & -590 & \\ \text{17.} & 315.6 & \\ \text{18.} & 984 & \\ \end{array} \][/tex]
These are the final answers.
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