b-7+8=3b+9

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Solution for b-7+8=3b+9 equation:


Simplifying
b + -7 + 8 = 3b + 9

Reorder the terms:
-7 + 8 + b = 3b + 9

Combine like terms: -7 + 8 = 1
1 + b = 3b + 9

Reorder the terms:
1 + b = 9 + 3b

Solving
1 + b = 9 + 3b

Solving for variable 'b'.

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

Add '-3b' to each side of the equation.
1 + b + -3b = 9 + 3b + -3b

Combine like terms: b + -3b = -2b
1 + -2b = 9 + 3b + -3b

Combine like terms: 3b + -3b = 0
1 + -2b = 9 + 0
1 + -2b = 9

Add '-1' to each side of the equation.
1 + -1 + -2b = 9 + -1

Combine like terms: 1 + -1 = 0
0 + -2b = 9 + -1
-2b = 9 + -1

Combine like terms: 9 + -1 = 8
-2b = 8

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

Simplifying
b = -4

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