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

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


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

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

Reorder the terms:
-9 + -5y + 3y = -21

Combine like terms: -5y + 3y = -2y
-9 + -2y = -21

Solving
-9 + -2y = -21

Solving for variable 'y'.

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

Add '9' to each side of the equation.
-9 + 9 + -2y = -21 + 9

Combine like terms: -9 + 9 = 0
0 + -2y = -21 + 9
-2y = -21 + 9

Combine like terms: -21 + 9 = -12
-2y = -12

Divide each side by '-2'.
y = 6

Simplifying
y = 6

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