-7(5-y)=21

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Solution for -7(5-y)=21 equation:


Simplifying
-7(5 + -1y) = 21
(5 * -7 + -1y * -7) = 21
(-35 + 7y) = 21

Solving
-35 + 7y = 21

Solving for variable 'y'.

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

Add '35' to each side of the equation.
-35 + 35 + 7y = 21 + 35

Combine like terms: -35 + 35 = 0
0 + 7y = 21 + 35
7y = 21 + 35

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

Divide each side by '7'.
y = 8

Simplifying
y = 8

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