Question

Solve the equation 7-y-y=-1

Answer 1

7-2y = -1
-2y =1 - 7
-2y = 8
Y = 4

Answer 2

Answer: y=4

Explanation:

7-y-y=-1

Combine like terms

7-2y=-1

Subtract seven on both sides of the equation

7-7-2y=-1-7

-2y=-8

Divide both sides by -2

-2y/-2=-8/-2

y=4

Check the answer by plugging 4 back in the equation for y.

7-4-4=3-4=-1

The final answer is y=4