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2x*3-3x*2-13x+7=0
We add all the numbers together, and all the variables
-13x+2x*3-3x*2+7=0
Wy multiply elements
-13x+6x-6x+7=0
We add all the numbers together, and all the variables
-13x+7=0
We move all terms containing x to the left, all other terms to the right
-13x=-7
x=-7/-13
x=7/13
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