3(-5y+2)=21

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Solution for 3(-5y+2)=21 equation: 


Simplifying
3(-5y + 2) = 21

Reorder the terms:
3(2 + -5y) = 21
(2 * 3 + -5y * 3) = 21
(6 + -15y) = 21

Solving
6 + -15y = 21

Solving for variable 'y'.

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

Add '-6' to each side of the equation.
6 + -6 + -15y = 21 + -6

Combine like terms: 6 + -6 = 0
0 + -15y = 21 + -6
-15y = 21 + -6

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

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

Simplifying
y = -1

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