7x-(-3x=-4)

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Solution for 7x-(-3x=-4) equation: 



7x-(-3x=-4)

We move all terms to the left:

7x-(-3x-(-4))=0



We calculate terms in parentheses: -(-3x-(-4)), so:

-3x-(-4)

We add all the numbers together, and all the variables

-3x+4

Back to the equation:

-(-3x+4)



We get rid of parentheses

7x+3x-4=0

We add all the numbers together, and all the variables

10x-4=0

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

10x=4

x=4/10

x=2/5

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