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

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


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

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

Reorder the terms:
42 + -6y = 21 + -3y

Solving
42 + -6y = 21 + -3y

Solving for variable 'y'.

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

Add '3y' to each side of the equation.
42 + -6y + 3y = 21 + -3y + 3y

Combine like terms: -6y + 3y = -3y
42 + -3y = 21 + -3y + 3y

Combine like terms: -3y + 3y = 0
42 + -3y = 21 + 0
42 + -3y = 21

Add '-42' to each side of the equation.
42 + -42 + -3y = 21 + -42

Combine like terms: 42 + -42 = 0
0 + -3y = 21 + -42
-3y = 21 + -42

Combine like terms: 21 + -42 = -21
-3y = -21

Divide each side by '-3'.
y = 7

Simplifying
y = 7

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