3b-8+(2b-7)=15

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Solution for 3b-8+(2b-7)=15 equation:


Simplifying
3b + -8 + (2b + -7) = 15

Reorder the terms:
3b + -8 + (-7 + 2b) = 15

Remove parenthesis around (-7 + 2b)
3b + -8 + -7 + 2b = 15

Reorder the terms:
-8 + -7 + 3b + 2b = 15

Combine like terms: -8 + -7 = -15
-15 + 3b + 2b = 15

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

Solving
-15 + 5b = 15

Solving for variable 'b'.

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

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

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

Combine like terms: 15 + 15 = 30
5b = 30

Divide each side by '5'.
b = 6

Simplifying
b = 6

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