9y+1=8y-9

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Solution for 9y+1=8y-9 equation:


Simplifying
9y + 1 = 8y + -9

Reorder the terms:
1 + 9y = 8y + -9

Reorder the terms:
1 + 9y = -9 + 8y

Solving
1 + 9y = -9 + 8y

Solving for variable 'y'.

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

Add '-8y' to each side of the equation.
1 + 9y + -8y = -9 + 8y + -8y

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

Combine like terms: 8y + -8y = 0
1 + 1y = -9 + 0
1 + 1y = -9

Add '-1' to each side of the equation.
1 + -1 + 1y = -9 + -1

Combine like terms: 1 + -1 = 0
0 + 1y = -9 + -1
1y = -9 + -1

Combine like terms: -9 + -1 = -10
1y = -10

Divide each side by '1'.
y = -10

Simplifying
y = -10

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