.15n+.05(2100-n)=210

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Solution for .15n+.05(2100-n)=210 equation: 



.15n+.05(2100-n)=210

We move all terms to the left:

.15n+.05(2100-n)-(210)=0

We add all the numbers together, and all the variables

.15n+.05(-1n+2100)-210=0

We multiply parentheses

.15n-0.05n+105-210=0

We add all the numbers together, and all the variables

0.1n-105=0

We move all terms containing n to the left, all other terms to the right

0.1n=105

n=105/0.1

n=1050

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