7(6y-3)=21y

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Solution for 7(6y-3)=21y equation:


Simplifying
7(6y + -3) = 21y

Reorder the terms:
7(-3 + 6y) = 21y
(-3 * 7 + 6y * 7) = 21y
(-21 + 42y) = 21y

Solving
-21 + 42y = 21y

Solving for variable 'y'.

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

Add '-21y' to each side of the equation.
-21 + 42y + -21y = 21y + -21y

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

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

Add '21' to each side of the equation.
-21 + 21 + 21y = 0 + 21

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

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

Divide each side by '21'.
y = 1

Simplifying
y = 1

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