3+5b=-42

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Solution for 3+5b=-42 equation: 


Simplifying
3 + 5b = -42

Solving
3 + 5b = -42

Solving for variable 'b'.

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

Add '-3' to each side of the equation.
3 + -3 + 5b = -42 + -3

Combine like terms: 3 + -3 = 0
0 + 5b = -42 + -3
5b = -42 + -3

Combine like terms: -42 + -3 = -45
5b = -45

Divide each side by '5'.
b = -9

Simplifying
b = -9

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