40=7x-5-4

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Solution for 40=7x-5-4 equation: 



40=7x-5-4

We move all terms to the left:

40-(7x-5-4)=0

We add all the numbers together, and all the variables

-(7x-9)+40=0

We get rid of parentheses

-7x+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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