6y-4y+5=21

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Solution for 6y-4y+5=21 equation: 


Simplifying
6y + -4y + 5 = 21

Reorder the terms:
5 + 6y + -4y = 21

Combine like terms: 6y + -4y = 2y
5 + 2y = 21

Solving
5 + 2y = 21

Solving for variable 'y'.

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

Add '-5' to each side of the equation.
5 + -5 + 2y = 21 + -5

Combine like terms: 5 + -5 = 0
0 + 2y = 21 + -5
2y = 21 + -5

Combine like terms: 21 + -5 = 16
2y = 16

Divide each side by '2'.
y = 8

Simplifying
y = 8

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