5(3y-9)-3y=-21

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Solution for 5(3y-9)-3y=-21 equation:


Simplifying
5(3y + -9) + -3y = -21

Reorder the terms:
5(-9 + 3y) + -3y = -21
(-9 * 5 + 3y * 5) + -3y = -21
(-45 + 15y) + -3y = -21

Combine like terms: 15y + -3y = 12y
-45 + 12y = -21

Solving
-45 + 12y = -21

Solving for variable 'y'.

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

Add '45' to each side of the equation.
-45 + 45 + 12y = -21 + 45

Combine like terms: -45 + 45 = 0
0 + 12y = -21 + 45
12y = -21 + 45

Combine like terms: -21 + 45 = 24
12y = 24

Divide each side by '12'.
y = 2

Simplifying
y = 2

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