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0.9a-7-1.92=-4.16+3.9a-5.2-2.8a
We move all terms to the left:
0.9a-7-1.92-(-4.16+3.9a-5.2-2.8a)=0
We add all the numbers together, and all the variables
0.9a-(1.1a-9.36)-7-1.92=0
We add all the numbers together, and all the variables
0.9a-(1.1a-9.36)-8.92=0
We get rid of parentheses
0.9a-1.1a+9.36-8.92=0
We add all the numbers together, and all the variables
-0.2a+0.44=0
We move all terms containing a to the left, all other terms to the right
-0.2a=-0.44
a=-0.44/-0.2
a=2+0.04/0.2
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