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.04+.07(15000-x)=900
We move all terms to the left:
.04+.07(15000-x)-(900)=0
We add all the numbers together, and all the variables
.07(-1x+15000)+.04-900=0
We add all the numbers together, and all the variables
.07(-1x+15000)-899.96=0
We multiply parentheses
-0.07x+1050-899.96=0
We add all the numbers together, and all the variables
-0.07x+150.04=0
We move all terms containing x to the left, all other terms to the right
-0.07x=-150.04
x=-150.04/-0.07
x=2143+0.029999999999973/0.07
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