42+2b=8b+9

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Solution for 42+2b=8b+9 equation:


Simplifying
42 + 2b = 8b + 9

Reorder the terms:
42 + 2b = 9 + 8b

Solving
42 + 2b = 9 + 8b

Solving for variable 'b'.

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

Add '-8b' to each side of the equation.
42 + 2b + -8b = 9 + 8b + -8b

Combine like terms: 2b + -8b = -6b
42 + -6b = 9 + 8b + -8b

Combine like terms: 8b + -8b = 0
42 + -6b = 9 + 0
42 + -6b = 9

Add '-42' to each side of the equation.
42 + -42 + -6b = 9 + -42

Combine like terms: 42 + -42 = 0
0 + -6b = 9 + -42
-6b = 9 + -42

Combine like terms: 9 + -42 = -33
-6b = -33

Divide each side by '-6'.
b = 5.5

Simplifying
b = 5.5

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