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

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


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

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

Combine like terms: -3 + 21 = 18
18 + 7y = -21

Solving
18 + 7y = -21

Solving for variable 'y'.

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

Add '-18' to each side of the equation.
18 + -18 + 7y = -21 + -18

Combine like terms: 18 + -18 = 0
0 + 7y = -21 + -18
7y = -21 + -18

Combine like terms: -21 + -18 = -39
7y = -39

Divide each side by '7'.
y = -5.571428571

Simplifying
y = -5.571428571

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