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1 vote
Solve the literal equation for y.
-12x-3y=15

2 Answers

6 votes

You said that -12x - 3y = 15

Add 3y to each side: -12x = 15 + 3y

Subtract 15 from each side: -12x - 15 = 3y

Divide each side by 3 : - 4x - 5 = y

User DNac
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-12x-3y=15\ \ \ |add\ 12x\ to\ both\ sides\\\\-12x+12x-3y=15+12x\\\\-3y=12x+15\ \ \ |divide\ both\ sides\ by\ (-3)\\\\-3y:(-3)=12x:(-3)+15:(-3)\\\\\huge\boxed{y=-4x-5}
User Dennis Doomen
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7.4k points