8+8y-5=7y+21-5y

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Solution for 8+8y-5=7y+21-5y equation:


Simplifying
8 + 8y + -5 = 7y + 21 + -5y

Reorder the terms:
8 + -5 + 8y = 7y + 21 + -5y

Combine like terms: 8 + -5 = 3
3 + 8y = 7y + 21 + -5y

Reorder the terms:
3 + 8y = 21 + 7y + -5y

Combine like terms: 7y + -5y = 2y
3 + 8y = 21 + 2y

Solving
3 + 8y = 21 + 2y

Solving for variable 'y'.

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

Add '-2y' to each side of the equation.
3 + 8y + -2y = 21 + 2y + -2y

Combine like terms: 8y + -2y = 6y
3 + 6y = 21 + 2y + -2y

Combine like terms: 2y + -2y = 0
3 + 6y = 21 + 0
3 + 6y = 21

Add '-3' to each side of the equation.
3 + -3 + 6y = 21 + -3

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

Combine like terms: 21 + -3 = 18
6y = 18

Divide each side by '6'.
y = 3

Simplifying
y = 3

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