-5y+6+2y=21

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Solution for -5y+6+2y=21 equation: 


Simplifying
-5y + 6 + 2y = 21

Reorder the terms:
6 + -5y + 2y = 21

Combine like terms: -5y + 2y = -3y
6 + -3y = 21

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

Combine like terms: 6 + -6 = 0
0 + -3y = 21 + -6
-3y = 21 + -6

Combine like terms: 21 + -6 = 15
-3y = 15

Divide each side by '-3'.
y = -5

Simplifying
y = -5

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