0.3x(x-5)=0.4-0.2(n-7)

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Solution for 0.3x(x-5)=0.4-0.2(n-7) equation: 


Simplifying
0.3x(x + -5) = 0.4 + -0.2(n + -7)

Reorder the terms:
0.3x(-5 + x) = 0.4 + -0.2(n + -7)
(-5 * 0.3x + x * 0.3x) = 0.4 + -0.2(n + -7)
(-1.5x + 0.3x2) = 0.4 + -0.2(n + -7)

Reorder the terms:
-1.5x + 0.3x2 = 0.4 + -0.2(-7 + n)
-1.5x + 0.3x2 = 0.4 + (-7 * -0.2 + n * -0.2)
-1.5x + 0.3x2 = 0.4 + (1.4 + -0.2n)

Combine like terms: 0.4 + 1.4 = 1.8
-1.5x + 0.3x2 = 1.8 + -0.2n

Solving
-1.5x + 0.3x2 = 1.8 + -0.2n

Solving for variable 'x'.

Reorder the terms:
-1.8 + 0.2n + -1.5x + 0.3x2 = 1.8 + -0.2n + -1.8 + 0.2n

Reorder the terms:
-1.8 + 0.2n + -1.5x + 0.3x2 = 1.8 + -1.8 + -0.2n + 0.2n

Combine like terms: 1.8 + -1.8 = 0.0
-1.8 + 0.2n + -1.5x + 0.3x2 = 0.0 + -0.2n + 0.2n
-1.8 + 0.2n + -1.5x + 0.3x2 = -0.2n + 0.2n

Combine like terms: -0.2n + 0.2n = 0.0
-1.8 + 0.2n + -1.5x + 0.3x2 = 0.0

The solution to this equation could not be determined.

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