10x+40=3x-9

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Solution for 10x+40=3x-9 equation: 



10x+40=3x-9

We move all terms to the left:

10x+40-(3x-9)=0

We get rid of parentheses

10x-3x+9+40=0

We add all the numbers together, and all the variables

7x+49=0

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

7x=-49

x=-49/7

x=-7

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