y-3(y+4)=20

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Solution for y-3(y+4)=20 equation: 


Simplifying
y + -3(y + 4) = 20

Reorder the terms:
y + -3(4 + y) = 20
y + (4 * -3 + y * -3) = 20
y + (-12 + -3y) = 20

Reorder the terms:
-12 + y + -3y = 20

Combine like terms: y + -3y = -2y
-12 + -2y = 20

Solving
-12 + -2y = 20

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '12' to each side of the equation.
-12 + 12 + -2y = 20 + 12

Combine like terms: -12 + 12 = 0
0 + -2y = 20 + 12
-2y = 20 + 12

Combine like terms: 20 + 12 = 32
-2y = 32

Divide each side by '-2'.
y = -16

Simplifying
y = -16

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