X = 3 - y
5x - 12 = y
Using the two equations above, solve for y.
A. y = 0.5
B. y = 2.5
C. y = -2
D. y = 5.5

A

Step-by-step explanation:

Given the 2 equations

x = 3 - y → (1)

5x - 12 = y → (2)

Substitute x = 3 - y into (2)

5(3 - y) - 12 = y ← distribute and simplify left side

15 - 5y - 12 = y

3 - 5y = y ( add 5y to both sides )

3 = 6y ( divide both sides by 6 )

= y, that is

y = 0.5 → A

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step-by-step explanation: