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720+90x=1.440
We move all terms to the left:
720+90x-(1.440)=0
We add all the numbers together, and all the variables
90x+720-(1.44)=0
We add all the numbers together, and all the variables
90x+718.56=0
We move all terms containing x to the left, all other terms to the right
90x=-718.56
x=-718.56/90
x=-7+34.59375/35.15625
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