7(y+3)+7y=-21

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Solution for 7(y+3)+7y=-21 equation:


Simplifying
7(y + 3) + 7y = -21

Reorder the terms:
7(3 + y) + 7y = -21
(3 * 7 + y * 7) + 7y = -21
(21 + 7y) + 7y = -21

Combine like terms: 7y + 7y = 14y
21 + 14y = -21

Solving
21 + 14y = -21

Solving for variable 'y'.

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

Add '-21' to each side of the equation.
21 + -21 + 14y = -21 + -21

Combine like terms: 21 + -21 = 0
0 + 14y = -21 + -21
14y = -21 + -21

Combine like terms: -21 + -21 = -42
14y = -42

Divide each side by '14'.
y = -3

Simplifying
y = -3

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