Question

To solve this system of equations using substitution, what could be substituted in place of y in the first equation? 4x = 5 − 2y y − 2x = 7

Answer 1

y =
`-(4x-5)/(2)`

Explanation:

Step 1: Switch sides

5 - 2y = 4x

Step 2: Subtract 5 from both sides

5 - 2y - 5 = 4x - 5

Step 3: Simplify

-2y = 4x - 5

Step 4: Divide both sides by -2

`(-2y)/(-2) = (4x)/(-2) - (5)/(-2)`

Step 5: Simplify

y =
`-(4x-5)/(2)`