3b-4=9b+8

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Solution for 3b-4=9b+8 equation:


Simplifying
3b + -4 = 9b + 8

Reorder the terms:
-4 + 3b = 9b + 8

Reorder the terms:
-4 + 3b = 8 + 9b

Solving
-4 + 3b = 8 + 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.
-4 + 3b + -9b = 8 + 9b + -9b

Combine like terms: 3b + -9b = -6b
-4 + -6b = 8 + 9b + -9b

Combine like terms: 9b + -9b = 0
-4 + -6b = 8 + 0
-4 + -6b = 8

Add '4' to each side of the equation.
-4 + 4 + -6b = 8 + 4

Combine like terms: -4 + 4 = 0
0 + -6b = 8 + 4
-6b = 8 + 4

Combine like terms: 8 + 4 = 12
-6b = 12

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

Simplifying
b = -2

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