4b+(3-b)=15

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Solution for 4b+(3-b)=15 equation:


Simplifying
4b + (3 + -1b) = 15

Remove parenthesis around (3 + -1b)
4b + 3 + -1b = 15

Reorder the terms:
3 + 4b + -1b = 15

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

Solving
3 + 3b = 15

Solving for variable 'b'.

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

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

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

Combine like terms: 15 + -3 = 12
3b = 12

Divide each side by '3'.
b = 4

Simplifying
b = 4

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