7b+8=5b-4

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Solution for 7b+8=5b-4 equation:


Simplifying
7b + 8 = 5b + -4

Reorder the terms:
8 + 7b = 5b + -4

Reorder the terms:
8 + 7b = -4 + 5b

Solving
8 + 7b = -4 + 5b

Solving for variable 'b'.

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

Add '-5b' to each side of the equation.
8 + 7b + -5b = -4 + 5b + -5b

Combine like terms: 7b + -5b = 2b
8 + 2b = -4 + 5b + -5b

Combine like terms: 5b + -5b = 0
8 + 2b = -4 + 0
8 + 2b = -4

Add '-8' to each side of the equation.
8 + -8 + 2b = -4 + -8

Combine like terms: 8 + -8 = 0
0 + 2b = -4 + -8
2b = -4 + -8

Combine like terms: -4 + -8 = -12
2b = -12

Divide each side by '2'.
b = -6

Simplifying
b = -6

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