7x-3x=-200

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Solution for 7x-3x=-200 equation: 



7x-3x=-200

We move all terms to the left:

7x-3x-(-200)=0

We add all the numbers together, and all the variables

4x+200=0

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

4x=-200

x=-200/4

x=-50

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