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Sagot :
The answers are -->
1.) 3 -a. An algebraic expression needs have a variable in it. In this case the variable is "a". So the answer is --> 3-a
2.) z+5. 5 more that z means 5 added to z. So, the answer is --> z+5
3.) 4 times the sum of 21 and a number n. In an algebraic expression, the brackets takes the highest order of preference. So, the answer is --> 4 times the sum of 21 and a number n
1.) 3 -a. An algebraic expression needs have a variable in it. In this case the variable is "a". So the answer is --> 3-a
2.) z+5. 5 more that z means 5 added to z. So, the answer is --> z+5
3.) 4 times the sum of 21 and a number n. In an algebraic expression, the brackets takes the highest order of preference. So, the answer is --> 4 times the sum of 21 and a number n
1) 3-a because it has a variable
2) 5 + z because more than mean +
3) 4 times the sum of 21 and a number because it shows the bracket
2) 5 + z because more than mean +
3) 4 times the sum of 21 and a number because it shows the bracket
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