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2x+4x+7=-3x
We move all terms to the left:
2x+4x+7-(-3x)=0
We add all the numbers together, and all the variables
6x-(-3x)+7=0
We get rid of parentheses
6x+3x+7=0
We add all the numbers together, and all the variables
9x+7=0
We move all terms containing x to the left, all other terms to the right
9x=-7
x=-7/9
x=-7/9
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