3(b-7)=-8-(7-b)

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


Simplifying
3(b + -7) = -8 + -1(7 + -1b)

Reorder the terms:
3(-7 + b) = -8 + -1(7 + -1b)
(-7 * 3 + b * 3) = -8 + -1(7 + -1b)
(-21 + 3b) = -8 + -1(7 + -1b)
-21 + 3b = -8 + (7 * -1 + -1b * -1)
-21 + 3b = -8 + (-7 + 1b)

Combine like terms: -8 + -7 = -15
-21 + 3b = -15 + 1b

Solving
-21 + 3b = -15 + 1b

Solving for variable 'b'.

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

Add '-1b' to each side of the equation.
-21 + 3b + -1b = -15 + 1b + -1b

Combine like terms: 3b + -1b = 2b
-21 + 2b = -15 + 1b + -1b

Combine like terms: 1b + -1b = 0
-21 + 2b = -15 + 0
-21 + 2b = -15

Add '21' to each side of the equation.
-21 + 21 + 2b = -15 + 21

Combine like terms: -21 + 21 = 0
0 + 2b = -15 + 21
2b = -15 + 21

Combine like terms: -15 + 21 = 6
2b = 6

Divide each side by '2'.
b = 3

Simplifying
b = 3

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