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0.80x+0.45(80)=0.40(140)
We move all terms to the left:
0.80x+0.45(80)-(0.40(140))=0
We add all the numbers together, and all the variables
0.80x+0.4580-(0.4014)=0
We add all the numbers together, and all the variables
0.80x+0.0566=0
We move all terms containing x to the left, all other terms to the right
0.80x=-0.0566
x=-0.0566/0.80
x=-0.0566/0.80
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