3(7+2b)=30+7(b-1)

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Solution for 3(7+2b)=30+7(b-1) equation:


Simplifying
3(7 + 2b) = 30 + 7(b + -1)
(7 * 3 + 2b * 3) = 30 + 7(b + -1)
(21 + 6b) = 30 + 7(b + -1)

Reorder the terms:
21 + 6b = 30 + 7(-1 + b)
21 + 6b = 30 + (-1 * 7 + b * 7)
21 + 6b = 30 + (-7 + 7b)

Combine like terms: 30 + -7 = 23
21 + 6b = 23 + 7b

Solving
21 + 6b = 23 + 7b

Solving for variable 'b'.

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

Add '-7b' to each side of the equation.
21 + 6b + -7b = 23 + 7b + -7b

Combine like terms: 6b + -7b = -1b
21 + -1b = 23 + 7b + -7b

Combine like terms: 7b + -7b = 0
21 + -1b = 23 + 0
21 + -1b = 23

Add '-21' to each side of the equation.
21 + -21 + -1b = 23 + -21

Combine like terms: 21 + -21 = 0
0 + -1b = 23 + -21
-1b = 23 + -21

Combine like terms: 23 + -21 = 2
-1b = 2

Divide each side by '-1'.
b = -2

Simplifying
b = -2

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