3(-3y+7)=21

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


Simplifying
3(-3y + 7) = 21

Reorder the terms:
3(7 + -3y) = 21
(7 * 3 + -3y * 3) = 21
(21 + -9y) = 21

Add '-21' to each side of the equation.
21 + -21 + -9y = 21 + -21

Combine like terms: 21 + -21 = 0
0 + -9y = 21 + -21
-9y = 21 + -21

Combine like terms: 21 + -21 = 0
-9y = 0

Solving
-9y = 0

Solving for variable 'y'.

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

Divide each side by '-9'.
y = 0

Simplifying
y = 0

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