-5y+7(y+5)=21

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


Simplifying
-5y + 7(y + 5) = 21

Reorder the terms:
-5y + 7(5 + y) = 21
-5y + (5 * 7 + y * 7) = 21
-5y + (35 + 7y) = 21

Reorder the terms:
35 + -5y + 7y = 21

Combine like terms: -5y + 7y = 2y
35 + 2y = 21

Solving
35 + 2y = 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 + 2y = 21 + -35

Combine like terms: 35 + -35 = 0
0 + 2y = 21 + -35
2y = 21 + -35

Combine like terms: 21 + -35 = -14
2y = -14

Divide each side by '2'.
y = -7

Simplifying
y = -7

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