46b-42b+9b+10b-21b-1=39

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Solution for 46b-42b+9b+10b-21b-1=39 equation:


Simplifying
46b + -42b + 9b + 10b + -21b + -1 = 39

Reorder the terms:
-1 + 46b + -42b + 9b + 10b + -21b = 39

Combine like terms: 46b + -42b = 4b
-1 + 4b + 9b + 10b + -21b = 39

Combine like terms: 4b + 9b = 13b
-1 + 13b + 10b + -21b = 39

Combine like terms: 13b + 10b = 23b
-1 + 23b + -21b = 39

Combine like terms: 23b + -21b = 2b
-1 + 2b = 39

Solving
-1 + 2b = 39

Solving for variable 'b'.

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

Add '1' to each side of the equation.
-1 + 1 + 2b = 39 + 1

Combine like terms: -1 + 1 = 0
0 + 2b = 39 + 1
2b = 39 + 1

Combine like terms: 39 + 1 = 40
2b = 40

Divide each side by '2'.
b = 20

Simplifying
b = 20

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