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Find all values of [tex]$x$[/tex] satisfying the given conditions:

[tex]\[
y_1 = 3(5x - 4) - 7
\][/tex]
[tex]\[
y_2 = 13(x - 4) + 49
\][/tex]
[tex]\[
y_1 = y_2
\][/tex]


Sagot :

Let's solve the equation step-by-step to find the values of \(x\).

First, we have the two equations:

[tex]\[ y_1 = 3(5x - 4) - 7 \][/tex]

[tex]\[ y_2 = 13(x - 4) + 49 \][/tex]

We are given that \(y_1 = y_2\). So, we set these two equations equal to each other:

[tex]\[ 3(5x - 4) - 7 = 13(x - 4) + 49 \][/tex]

Next, we need to simplify both sides of the equation:

Starting with the left-hand side,

[tex]\[ 3(5x - 4) - 7 \][/tex]

We first distribute the 3:

[tex]\[ 3 \cdot 5x - 3 \cdot 4 - 7 \][/tex]

[tex]\[ 15x - 12 - 7 \][/tex]

[tex]\[ 15x - 19 \][/tex]

Now, for the right-hand side,

[tex]\[ 13(x - 4) + 49 \][/tex]

We distribute the 13:

[tex]\[ 13 \cdot x - 13 \cdot 4 + 49 \][/tex]

[tex]\[ 13x - 52 + 49 \][/tex]

[tex]\[ 13x - 3 \][/tex]

With both sides simplified, we have:

[tex]\[ 15x - 19 = 13x - 3 \][/tex]

To isolate \(x\), we first move the \(x\) terms to one side and the constant terms to the other side. Subtract \(13x\) from both sides:

[tex]\[ 15x - 13x - 19 = -3 \][/tex]

[tex]\[ 2x - 19 = -3 \][/tex]

Next, add 19 to both sides:

[tex]\[ 2x = -3 + 19 \][/tex]

[tex]\[ 2x = 16 \][/tex]

Finally, divide both sides by 2:

[tex]\[ x = \frac{16}{2} \][/tex]

[tex]\[ x = 8 \][/tex]

Therefore, the value of \(x\) that satisfies the given conditions is:

[tex]\[ x = 8 \][/tex]