2(b-7)=-21+b

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Solution for 2(b-7)=-21+b equation:


Simplifying
2(b + -7) = -21 + b

Reorder the terms:
2(-7 + b) = -21 + b
(-7 * 2 + b * 2) = -21 + b
(-14 + 2b) = -21 + b

Solving
-14 + 2b = -21 + b

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.
-14 + 2b + -1b = -21 + b + -1b

Combine like terms: 2b + -1b = 1b
-14 + 1b = -21 + b + -1b

Combine like terms: b + -1b = 0
-14 + 1b = -21 + 0
-14 + 1b = -21

Add '14' to each side of the equation.
-14 + 14 + 1b = -21 + 14

Combine like terms: -14 + 14 = 0
0 + 1b = -21 + 14
1b = -21 + 14

Combine like terms: -21 + 14 = -7
1b = -7

Divide each side by '1'.
b = -7

Simplifying
b = -7

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