Question

For what value of the variable is the value of the expression: 5x+7 is one third of the value of the expression 61−10x? Pls help

Answer 1

1.6

Explanation:

You want the solution to ...

`5x+7=(1)/(3)(61-10x)\\\\3(5x+7)=61-10x\\\\25x=40\qquad\text{add $10x-21$}\\\\x=(40)/(25)\\\\\boxed{x=1.6}`

_____

Check

5(1.6)+7 = 15

61 -10(1.6) = 45

15 is 1/3 of 45 as required.