3(7+2b)=15+5b

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Solution for 3(7+2b)=15+5b equation:


Simplifying
3(7 + 2b) = 15 + 5b
(7 * 3 + 2b * 3) = 15 + 5b
(21 + 6b) = 15 + 5b

Solving
21 + 6b = 15 + 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.
21 + 6b + -5b = 15 + 5b + -5b

Combine like terms: 6b + -5b = 1b
21 + 1b = 15 + 5b + -5b

Combine like terms: 5b + -5b = 0
21 + 1b = 15 + 0
21 + 1b = 15

Add '-21' to each side of the equation.
21 + -21 + 1b = 15 + -21

Combine like terms: 21 + -21 = 0
0 + 1b = 15 + -21
1b = 15 + -21

Combine like terms: 15 + -21 = -6
1b = -6

Divide each side by '1'.
b = -6

Simplifying
b = -6

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