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5x*2-2x-4=0
We add all the numbers together, and all the variables
-2x+5x*2-4=0
Wy multiply elements
-2x+10x-4=0
We add all the numbers together, and all the variables
8x-4=0
We move all terms containing x to the left, all other terms to the right
8x=4
x=4/8
x=1/2
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