3+9x=-42

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Solution for 3+9x=-42 equation: 



3+9x=-42

We move all terms to the left:

3+9x-(-42)=0

We add all the numbers together, and all the variables

9x+45=0

We move all terms containing x to the left, all other terms to the right

9x=-45

x=-45/9

x=-5

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