2A+9B-C+3D+5E+7F=138

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Solution for 2A+9B-C+3D+5E+7F=138 equation: 


Simplifying
2A + 9B + -1C + 3D + 5E + 7F = 138

Solving
2A + 9B + -1C + 3D + 5E + 7F = 138

Solving for variable 'A'.

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

Add '-9B' to each side of the equation.
2A + 9B + -1C + 3D + 5E + -9B + 7F = 138 + -9B

Reorder the terms:
2A + 9B + -9B + -1C + 3D + 5E + 7F = 138 + -9B

Combine like terms: 9B + -9B = 0
2A + 0 + -1C + 3D + 5E + 7F = 138 + -9B
2A + -1C + 3D + 5E + 7F = 138 + -9B

Add 'C' to each side of the equation.
2A + -1C + 3D + 5E + C + 7F = 138 + -9B + C

Reorder the terms:
2A + -1C + C + 3D + 5E + 7F = 138 + -9B + C

Combine like terms: -1C + C = 0
2A + 0 + 3D + 5E + 7F = 138 + -9B + C
2A + 3D + 5E + 7F = 138 + -9B + C

Add '-3D' to each side of the equation.
2A + 3D + 5E + -3D + 7F = 138 + -9B + C + -3D

Reorder the terms:
2A + 3D + -3D + 5E + 7F = 138 + -9B + C + -3D

Combine like terms: 3D + -3D = 0
2A + 0 + 5E + 7F = 138 + -9B + C + -3D
2A + 5E + 7F = 138 + -9B + C + -3D

Add '-5E' to each side of the equation.
2A + 5E + -5E + 7F = 138 + -9B + C + -3D + -5E

Combine like terms: 5E + -5E = 0
2A + 0 + 7F = 138 + -9B + C + -3D + -5E
2A + 7F = 138 + -9B + C + -3D + -5E

Add '-7F' to each side of the equation.
2A + 7F + -7F = 138 + -9B + C + -3D + -5E + -7F

Combine like terms: 7F + -7F = 0
2A + 0 = 138 + -9B + C + -3D + -5E + -7F
2A = 138 + -9B + C + -3D + -5E + -7F

Divide each side by '2'.
A = 69 + -4.5B + 0.5C + -1.5D + -2.5E + -3.5F

Simplifying
A = 69 + -4.5B + 0.5C + -1.5D + -2.5E + -3.5F

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