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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

3x(-4)+7x(-4)-(10)=0

We add all the numbers together, and all the variables

3x(-4)+7x(-4)-10=0

We multiply parentheses

-12x-28x-10=0

We add all the numbers together, and all the variables

-40x-10=0

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

-40x=10

x=10/-40

x=-1/4

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