0.40x+0.05(18-X)=0.10(72)

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Solution for 0.40x+0.05(18-X)=0.10(72) equation: 


Simplifying
0.40x + 0.05(18 + -1X) = 0.10(72)
0.40x + (18 * 0.05 + -1X * 0.05) = 0.10(72)
0.40x + (0.9 + -0.05X) = 0.10(72)

Reorder the terms:
0.9 + -0.05X + 0.40x = 0.10(72)

Multiply 0.10 * 72
0.9 + -0.05X + 0.40x = 7.2

Solving
0.9 + -0.05X + 0.40x = 7.2

Solving for variable 'X'.

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

Add '-0.9' to each side of the equation.
0.9 + -0.05X + -0.9 + 0.40x = 7.2 + -0.9

Reorder the terms:
0.9 + -0.9 + -0.05X + 0.40x = 7.2 + -0.9

Combine like terms: 0.9 + -0.9 = 0.0
0.0 + -0.05X + 0.40x = 7.2 + -0.9
-0.05X + 0.40x = 7.2 + -0.9

Combine like terms: 7.2 + -0.9 = 6.3
-0.05X + 0.40x = 6.3

Add '-0.40x' to each side of the equation.
-0.05X + 0.40x + -0.40x = 6.3 + -0.40x

Combine like terms: 0.40x + -0.40x = 0.00
-0.05X + 0.00 = 6.3 + -0.40x
-0.05X = 6.3 + -0.40x

Divide each side by '-0.05'.
X = -126 + 8x

Simplifying
X = -126 + 8x

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