8b-9=7b

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Solution for 8b-9=7b equation:


Simplifying
8b + -9 = 7b

Reorder the terms:
-9 + 8b = 7b

Solving
-9 + 8b = 7b

Solving for variable 'b'.

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

Add '-7b' to each side of the equation.
-9 + 8b + -7b = 7b + -7b

Combine like terms: 8b + -7b = 1b
-9 + 1b = 7b + -7b

Combine like terms: 7b + -7b = 0
-9 + 1b = 0

Add '9' to each side of the equation.
-9 + 9 + 1b = 0 + 9

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

Combine like terms: 0 + 9 = 9
1b = 9

Divide each side by '1'.
b = 9

Simplifying
b = 9

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