9y+4=7y+y-y

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Solution for 9y+4=7y+y-y equation:


Simplifying
9y + 4 = 7y + y + -1y

Reorder the terms:
4 + 9y = 7y + y + -1y

Combine like terms: 7y + y = 8y
4 + 9y = 8y + -1y

Combine like terms: 8y + -1y = 7y
4 + 9y = 7y

Solving
4 + 9y = 7y

Solving for variable 'y'.

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

Add '-7y' to each side of the equation.
4 + 9y + -7y = 7y + -7y

Combine like terms: 9y + -7y = 2y
4 + 2y = 7y + -7y

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

Add '-4' to each side of the equation.
4 + -4 + 2y = 0 + -4

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

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

Divide each side by '2'.
y = -2

Simplifying
y = -2

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