5x-2y=30

Complete the missing value in the solution to the equation.
(8,_)

5

Step-by-step explanation:

We are given an x coordinate of the solution, so we can substitute 8 in for x

5x-2y=30

5(8)-2y=30

Multiply 5 and 8

40-2y=30

To solve, we need to get y by itself. First, move all the numbers to the same side of the equation

To do this, subtract 40 from both sides

40-40-2y=30-40

-2y= -10

y is still not by itself, it is being multiplied by -2 . To undo this, divide both sides by -2

-2y/-2= -10/-2

y=5

So, the missing value is 5

triangle and cube

step-by-step explanation: