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Solve for y

-9 = y + 8

User Ifthenelse
by
7.7k points

2 Answers

2 votes

Answer:

y = -17

Step-by-step 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.

User Mudit Shukla
by
8.1k points
2 votes

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

User Conti
by
8.0k points

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