9-3y=8-4y

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Solution for 9-3y=8-4y equation:


Simplifying
9 + -3y = 8 + -4y

Solving
9 + -3y = 8 + -4y

Solving for variable 'y'.

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

Add '4y' to each side of the equation.
9 + -3y + 4y = 8 + -4y + 4y

Combine like terms: -3y + 4y = 1y
9 + 1y = 8 + -4y + 4y

Combine like terms: -4y + 4y = 0
9 + 1y = 8 + 0
9 + 1y = 8

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

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

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

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

Simplifying
y = -1

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