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

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


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

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

Combine like terms: 5y + y = 6y
7 + 6y = 7y + 21 + -5y

Reorder the terms:
7 + 6y = 21 + 7y + -5y

Combine like terms: 7y + -5y = 2y
7 + 6y = 21 + 2y

Solving
7 + 6y = 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.
7 + 6y + -2y = 21 + 2y + -2y

Combine like terms: 6y + -2y = 4y
7 + 4y = 21 + 2y + -2y

Combine like terms: 2y + -2y = 0
7 + 4y = 21 + 0
7 + 4y = 21

Add '-7' to each side of the equation.
7 + -7 + 4y = 21 + -7

Combine like terms: 7 + -7 = 0
0 + 4y = 21 + -7
4y = 21 + -7

Combine like terms: 21 + -7 = 14
4y = 14

Divide each side by '4'.
y = 3.5

Simplifying
y = 3.5

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