7y-3(y+4)=20

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


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

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

Reorder the terms:
-12 + 7y + -3y = 20

Combine like terms: 7y + -3y = 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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