contestada

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

Respuesta :

sqdancefan

Answer:

  1.6

Step-by-step explanation:

You want the solution to ...

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

_____

Check

5(1.6)+7 = 15

61 -10(1.6) = 45

15 is 1/3 of 45 as required.

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