7b+8=9b

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Solution for 7b+8=9b equation:


Simplifying
7b + 8 = 9b

Reorder the terms:
8 + 7b = 9b

Solving
8 + 7b = 9b

Solving for variable 'b'.

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

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

Combine like terms: 7b + -9b = -2b
8 + -2b = 9b + -9b

Combine like terms: 9b + -9b = 0
8 + -2b = 0

Add '-8' to each side of the equation.
8 + -8 + -2b = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -2b = 0 + -8
-2b = 0 + -8

Combine like terms: 0 + -8 = -8
-2b = -8

Divide each side by '-2'.
b = 4

Simplifying
b = 4

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