3(7b-7)=2b-40

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Solution for 3(7b-7)=2b-40 equation:


Simplifying
3(7b + -7) = 2b + -40

Reorder the terms:
3(-7 + 7b) = 2b + -40
(-7 * 3 + 7b * 3) = 2b + -40
(-21 + 21b) = 2b + -40

Reorder the terms:
-21 + 21b = -40 + 2b

Solving
-21 + 21b = -40 + 2b

Solving for variable 'b'.

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

Add '-2b' to each side of the equation.
-21 + 21b + -2b = -40 + 2b + -2b

Combine like terms: 21b + -2b = 19b
-21 + 19b = -40 + 2b + -2b

Combine like terms: 2b + -2b = 0
-21 + 19b = -40 + 0
-21 + 19b = -40

Add '21' to each side of the equation.
-21 + 21 + 19b = -40 + 21

Combine like terms: -21 + 21 = 0
0 + 19b = -40 + 21
19b = -40 + 21

Combine like terms: -40 + 21 = -19
19b = -19

Divide each side by '19'.
b = -1

Simplifying
b = -1

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