20=70xNA+90xNB

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Solution for 20=70xNA+90xNB equation: 


Simplifying
20 = 70xNA + 90xNB

Solving
20 = 70xAN + 90xBN

Solving for variable 'x'.

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

Add '-70xAN' to each side of the equation.
20 + -70xAN = 70xAN + -70xAN + 90xBN

Combine like terms: 70xAN + -70xAN = 0
20 + -70xAN = 0 + 90xBN
20 + -70xAN = 90xBN

Add '-90xBN' to each side of the equation.
20 + -70xAN + -90xBN = 90xBN + -90xBN

Combine like terms: 90xBN + -90xBN = 0
20 + -70xAN + -90xBN = 0

Add '-20' to each side of the equation.
20 + -70xAN + -20 + -90xBN = 0 + -20

Reorder the terms:
20 + -20 + -70xAN + -90xBN = 0 + -20

Combine like terms: 20 + -20 = 0
0 + -70xAN + -90xBN = 0 + -20
-70xAN + -90xBN = 0 + -20

Combine like terms: 0 + -20 = -20
-70xAN + -90xBN = -20

Reorder the terms:
20 + -70xAN + -90xBN = -20 + 20

Combine like terms: -20 + 20 = 0
20 + -70xAN + -90xBN = 0

Factor out the Greatest Common Factor (GCF), '10'.
10(2 + -7xAN + -9xBN) = 0

Ignore the factor 10.

Subproblem 1
Set the factor '(2 + -7xAN + -9xBN)' equal to zero and attempt to solve:

Simplifying
2 + -7xAN + -9xBN = 0

Solving
2 + -7xAN + -9xBN = 0

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

Add '-2' to each side of the equation.
2 + -7xAN + -2 + -9xBN = 0 + -2

Reorder the terms:
2 + -2 + -7xAN + -9xBN = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -7xAN + -9xBN = 0 + -2
-7xAN + -9xBN = 0 + -2

Combine like terms: 0 + -2 = -2
-7xAN + -9xBN = -2

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.

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