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x*0.07+x=1400
We move all terms to the left:
x*0.07+x-(1400)=0
We add all the numbers together, and all the variables
x+x*0.07-1400=0
Wy multiply elements
x+0.07x-1400=0
We add all the numbers together, and all the variables
1.07x-1400=0
We move all terms containing x to the left, all other terms to the right
1.07x=1400
x=1400/1.07
x=1308+0.43999999999983/1.07
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