3b+2b-b=15-7+4

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Solution for 3b+2b-b=15-7+4 equation: 


Simplifying
3b + 2b + -1b = 15 + -7 + 4

Combine like terms: 3b + 2b = 5b
5b + -1b = 15 + -7 + 4

Combine like terms: 5b + -1b = 4b
4b = 15 + -7 + 4

Combine like terms: 15 + -7 = 8
4b = 8 + 4

Combine like terms: 8 + 4 = 12
4b = 12

Solving
4b = 12

Solving for variable 'b'.

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

Divide each side by '4'.
b = 3

Simplifying
b = 3

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