2(y+7)-4=20

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Solution for 2(y+7)-4=20 equation:


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

Reorder the terms:
2(7 + y) + -4 = 20
(7 * 2 + y * 2) + -4 = 20
(14 + 2y) + -4 = 20

Reorder the terms:
14 + -4 + 2y = 20

Combine like terms: 14 + -4 = 10
10 + 2y = 20

Solving
10 + 2y = 20

Solving for variable 'y'.

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

Add '-10' to each side of the equation.
10 + -10 + 2y = 20 + -10

Combine like terms: 10 + -10 = 0
0 + 2y = 20 + -10
2y = 20 + -10

Combine like terms: 20 + -10 = 10
2y = 10

Divide each side by '2'.
y = 5

Simplifying
y = 5

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