4(3y+3)-(5-y)=20

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Solution for 4(3y+3)-(5-y)=20 equation:


Simplifying
4(3y + 3) + -1(5 + -1y) = 20

Reorder the terms:
4(3 + 3y) + -1(5 + -1y) = 20
(3 * 4 + 3y * 4) + -1(5 + -1y) = 20
(12 + 12y) + -1(5 + -1y) = 20
12 + 12y + (5 * -1 + -1y * -1) = 20
12 + 12y + (-5 + 1y) = 20

Reorder the terms:
12 + -5 + 12y + 1y = 20

Combine like terms: 12 + -5 = 7
7 + 12y + 1y = 20

Combine like terms: 12y + 1y = 13y
7 + 13y = 20

Solving
7 + 13y = 20

Solving for variable 'y'.

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

Add '-7' to each side of the equation.
7 + -7 + 13y = 20 + -7

Combine like terms: 7 + -7 = 0
0 + 13y = 20 + -7
13y = 20 + -7

Combine like terms: 20 + -7 = 13
13y = 13

Divide each side by '13'.
y = 1

Simplifying
y = 1

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