3(-y+7)+8y=21

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Solution for 3(-y+7)+8y=21 equation:


Simplifying
3(-1y + 7) + 8y = 21

Reorder the terms:
3(7 + -1y) + 8y = 21
(7 * 3 + -1y * 3) + 8y = 21
(21 + -3y) + 8y = 21

Combine like terms: -3y + 8y = 5y
21 + 5y = 21

Add '-21' to each side of the equation.
21 + -21 + 5y = 21 + -21

Combine like terms: 21 + -21 = 0
0 + 5y = 21 + -21
5y = 21 + -21

Combine like terms: 21 + -21 = 0
5y = 0

Solving
5y = 0

Solving for variable 'y'.

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

Divide each side by '5'.
y = 0

Simplifying
y = 0

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