Solve for y
y=117
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3\left(-1-7y\right)+20y=-120
Multiply both sides of the equation by 5.
-3-21y+20y=-120
Use the distributive property to multiply 3 by -1-7y.
-3-y=-120
Combine -21y and 20y to get -y.
-y=-120+3
Add 3 to both sides.
-y=-117
Add -120 and 3 to get -117.
y=117
Multiply both sides by -1.
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