10x+30-3x-9=-42

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Solution for 10x+30-3x-9=-42 equation: 



10x+30-3x-9=-42

We move all terms to the left:

10x+30-3x-9-(-42)=0

We add all the numbers together, and all the variables

7x+63=0

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

7x=-63

x=-63/7

x=-9

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