3b+8-b=3(b-4)+5

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Solution for 3b+8-b=3(b-4)+5 equation:


Simplifying
3b + 8 + -1b = 3(b + -4) + 5

Reorder the terms:
8 + 3b + -1b = 3(b + -4) + 5

Combine like terms: 3b + -1b = 2b
8 + 2b = 3(b + -4) + 5

Reorder the terms:
8 + 2b = 3(-4 + b) + 5
8 + 2b = (-4 * 3 + b * 3) + 5
8 + 2b = (-12 + 3b) + 5

Reorder the terms:
8 + 2b = -12 + 5 + 3b

Combine like terms: -12 + 5 = -7
8 + 2b = -7 + 3b

Solving
8 + 2b = -7 + 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.
8 + 2b + -3b = -7 + 3b + -3b

Combine like terms: 2b + -3b = -1b
8 + -1b = -7 + 3b + -3b

Combine like terms: 3b + -3b = 0
8 + -1b = -7 + 0
8 + -1b = -7

Add '-8' to each side of the equation.
8 + -8 + -1b = -7 + -8

Combine like terms: 8 + -8 = 0
0 + -1b = -7 + -8
-1b = -7 + -8

Combine like terms: -7 + -8 = -15
-1b = -15

Divide each side by '-1'.
b = 15

Simplifying
b = 15

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