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 = 8
-4y = 8

Divide each side by '-4'.
y = -2

Simplifying
y = -2

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