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1.1x+1.2x-5.4=-4
We move all terms to the left:
1.1x+1.2x-5.4-(-4)=0
We add all the numbers together, and all the variables
2.3x-1.4=0
We move all terms containing x to the left, all other terms to the right
2.3x=1.4
x=1.4/2.3
x=1/1.6428571428571
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