3(y+4)-7y=-20

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Solution for 3(y+4)-7y=-20 equation:


Simplifying
3(y + 4) + -7y = -20

Reorder the terms:
3(4 + y) + -7y = -20
(4 * 3 + y * 3) + -7y = -20
(12 + 3y) + -7y = -20

Combine like terms: 3y + -7y = -4y
12 + -4y = -20

Solving
12 + -4y = -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 + -4y = -20 + -12

Combine like terms: 12 + -12 = 0
0 + -4y = -20 + -12
-4y = -20 + -12

Combine like terms: -20 + -12 = -32
-4y = -32

Divide each side by '-4'.
y = 8

Simplifying
y = 8

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