9y-8y-4=7

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Solution for 9y-8y-4=7 equation: 


Simplifying
9y + -8y + -4 = 7

Reorder the terms:
-4 + 9y + -8y = 7

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

Solving
-4 + 1y = 7

Solving for variable 'y'.

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

Add '4' to each side of the equation.
-4 + 4 + 1y = 7 + 4

Combine like terms: -4 + 4 = 0
0 + 1y = 7 + 4
1y = 7 + 4

Combine like terms: 7 + 4 = 11
1y = 11

Divide each side by '1'.
y = 11

Simplifying
y = 11

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