7x+3x=10-20

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Solution for 7x+3x=10-20 equation: 



7x+3x=10-20

We move all terms to the left:

7x+3x-(10-20)=0

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

10x+10=0

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

10x=-10

x=-10/10

x=-1

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