7(y+8)=21

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Solution for 7(y+8)=21 equation: 


Simplifying
7(y + 8) = 21

Reorder the terms:
7(8 + y) = 21
(8 * 7 + y * 7) = 21
(56 + 7y) = 21

Solving
56 + 7y = 21

Solving for variable 'y'.

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

Add '-56' to each side of the equation.
56 + -56 + 7y = 21 + -56

Combine like terms: 56 + -56 = 0
0 + 7y = 21 + -56
7y = 21 + -56

Combine like terms: 21 + -56 = -35
7y = -35

Divide each side by '7'.
y = -5

Simplifying
y = -5

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