-2b+7-3b=21

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Solution for -2b+7-3b=21 equation:


Simplifying
-2b + 7 + -3b = 21

Reorder the terms:
7 + -2b + -3b = 21

Combine like terms: -2b + -3b = -5b
7 + -5b = 21

Solving
7 + -5b = 21

Solving for variable 'b'.

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

Add '-7' to each side of the equation.
7 + -7 + -5b = 21 + -7

Combine like terms: 7 + -7 = 0
0 + -5b = 21 + -7
-5b = 21 + -7

Combine like terms: 21 + -7 = 14
-5b = 14

Divide each side by '-5'.
b = -2.8

Simplifying
b = -2.8

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