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2.9=8.5-0.8x
We move all terms to the left:
2.9-(8.5-0.8x)=0
We add all the numbers together, and all the variables
-(-0.8x+8.5)+2.9=0
We get rid of parentheses
0.8x-8.5+2.9=0
We add all the numbers together, and all the variables
0.8x-5.6=0
We move all terms containing x to the left, all other terms to the right
0.8x=5.6
x=5.6/0.8
x=6+0.8/0.8
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