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1.2x*2+x*2=198
We move all terms to the left:
1.2x*2+x*2-(198)=0
Wy multiply elements
1.2x*2+2x-198=0
We add all the numbers together, and all the variables
2x+1.2x*2-198=0
We move all terms containing x to the left, all other terms to the right
2x+1.2x*2=198
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