Question

Solve for y -9 = y + 8

Answer 1

Answer:

y=−17

Step-by-step explanation:

−9=y+8

Flip the equation.

y+8=−9

Subtract 8 from both sides.

y+8−8=−9−8

y=−17

Answer 2

Answer:

y = -17

Explanation:

Step 1: To solve this equation, subtract eight from both sides. This will isolate the variable (y) and allow us to find its value.

$-9 = y + 8\\(-9 - 8) = y + (8 - 8)\\(-9 - 8) = y\\-17 = y$

Step 2: Switch sides

$-17 = y\\y = -17$

Bonus Step: If you would like to double check that the variable (y) does in fact equal negative seventeen, substitute the value of the variable in the equation and solve.

$-9 = y + 8\\-9 = -17 + 8\\-9 = -9 [true]$

Therefore, the value of y in the given equation is -17.