3b+15=8b-5

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Solution for 3b+15=8b-5 equation:


Simplifying
3b + 15 = 8b + -5

Reorder the terms:
15 + 3b = 8b + -5

Reorder the terms:
15 + 3b = -5 + 8b

Solving
15 + 3b = -5 + 8b

Solving for variable 'b'.

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

Add '-8b' to each side of the equation.
15 + 3b + -8b = -5 + 8b + -8b

Combine like terms: 3b + -8b = -5b
15 + -5b = -5 + 8b + -8b

Combine like terms: 8b + -8b = 0
15 + -5b = -5 + 0
15 + -5b = -5

Add '-15' to each side of the equation.
15 + -15 + -5b = -5 + -15

Combine like terms: 15 + -15 = 0
0 + -5b = -5 + -15
-5b = -5 + -15

Combine like terms: -5 + -15 = -20
-5b = -20

Divide each side by '-5'.
b = 4

Simplifying
b = 4

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