9y+1=8y-1

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


Simplifying
9y + 1 = 8y + -1

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

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

Solving
1 + 9y = -1 + 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 = -1 + 8y + -8y

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

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

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

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

Combine like terms: -1 + -1 = -2
1y = -2

Divide each side by '1'.
y = -2

Simplifying
y = -2

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