0.15n+0.07(3000-n)=0.09(3000)

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Solution for 0.15n+0.07(3000-n)=0.09(3000) equation: 


Simplifying
0.15n + 0.07(3000 + -1n) = 0.09(3000)
0.15n + (3000 * 0.07 + -1n * 0.07) = 0.09(3000)
0.15n + (210 + -0.07n) = 0.09(3000)

Reorder the terms:
210 + 0.15n + -0.07n = 0.09(3000)

Combine like terms: 0.15n + -0.07n = 0.08n
210 + 0.08n = 0.09(3000)

Multiply 0.09 * 3000
210 + 0.08n = 270

Solving
210 + 0.08n = 270

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '-210' to each side of the equation.
210 + -210 + 0.08n = 270 + -210

Combine like terms: 210 + -210 = 0
0 + 0.08n = 270 + -210
0.08n = 270 + -210

Combine like terms: 270 + -210 = 60
0.08n = 60

Divide each side by '0.08'.
n = 750

Simplifying
n = 750

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