7b-15=5b+3

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Solution for 7b-15=5b+3 equation:


Simplifying
7b + -15 = 5b + 3

Reorder the terms:
-15 + 7b = 5b + 3

Reorder the terms:
-15 + 7b = 3 + 5b

Solving
-15 + 7b = 3 + 5b

Solving for variable 'b'.

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

Add '-5b' to each side of the equation.
-15 + 7b + -5b = 3 + 5b + -5b

Combine like terms: 7b + -5b = 2b
-15 + 2b = 3 + 5b + -5b

Combine like terms: 5b + -5b = 0
-15 + 2b = 3 + 0
-15 + 2b = 3

Add '15' to each side of the equation.
-15 + 15 + 2b = 3 + 15

Combine like terms: -15 + 15 = 0
0 + 2b = 3 + 15
2b = 3 + 15

Combine like terms: 3 + 15 = 18
2b = 18

Divide each side by '2'.
b = 9

Simplifying
b = 9

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