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0.7x+-+1.4=+-3.5
We move all terms to the left:
0.7x+-+1.4-(+-3.5)=0
We add all the numbers together, and all the variables
0.7x+1.4+--(-3.5)=0
We add all the numbers together, and all the variables
0.7x-2.1=0
We move all terms containing x to the left, all other terms to the right
0.7x=2.1
x=2.1/0.7
x=3+4.4408920985006E-16/0.7
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