3(2y-2)=7y-21

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Solution for 3(2y-2)=7y-21 equation:


Simplifying
3(2y + -2) = 7y + -21

Reorder the terms:
3(-2 + 2y) = 7y + -21
(-2 * 3 + 2y * 3) = 7y + -21
(-6 + 6y) = 7y + -21

Reorder the terms:
-6 + 6y = -21 + 7y

Solving
-6 + 6y = -21 + 7y

Solving for variable 'y'.

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

Add '-7y' to each side of the equation.
-6 + 6y + -7y = -21 + 7y + -7y

Combine like terms: 6y + -7y = -1y
-6 + -1y = -21 + 7y + -7y

Combine like terms: 7y + -7y = 0
-6 + -1y = -21 + 0
-6 + -1y = -21

Add '6' to each side of the equation.
-6 + 6 + -1y = -21 + 6

Combine like terms: -6 + 6 = 0
0 + -1y = -21 + 6
-1y = -21 + 6

Combine like terms: -21 + 6 = -15
-1y = -15

Divide each side by '-1'.
y = 15

Simplifying
y = 15

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