3B-15=8B-20

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Solution for 3B-15=8B-20 equation: 


Simplifying
3B + -15 = 8B + -20

Reorder the terms:
-15 + 3B = 8B + -20

Reorder the terms:
-15 + 3B = -20 + 8B

Solving
-15 + 3B = -20 + 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 = -20 + 8B + -8B

Combine like terms: 3B + -8B = -5B
-15 + -5B = -20 + 8B + -8B

Combine like terms: 8B + -8B = 0
-15 + -5B = -20 + 0
-15 + -5B = -20

Add '15' to each side of the equation.
-15 + 15 + -5B = -20 + 15

Combine like terms: -15 + 15 = 0
0 + -5B = -20 + 15
-5B = -20 + 15

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

Divide each side by '-5'.
B = 1

Simplifying
B = 1

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