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0.9a-2.6=1.7
We move all terms to the left:
0.9a-2.6-(1.7)=0
We add all the numbers together, and all the variables
0.9a-4.3=0
We move all terms containing a to the left, all other terms to the right
0.9a=4.3
a=4.3/0.9
a=4+0.7/0.9
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