0.5X-0.4(80+X)=-0.35(80)

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Solution for 0.5X-0.4(80+X)=-0.35(80) equation: 


Simplifying
0.5X + -0.4(80 + X) = -0.35(80)
0.5X + (80 * -0.4 + X * -0.4) = -0.35(80)
0.5X + (-32 + -0.4X) = -0.35(80)

Reorder the terms:
-32 + 0.5X + -0.4X = -0.35(80)

Combine like terms: 0.5X + -0.4X = 0.1X
-32 + 0.1X = -0.35(80)

Multiply -0.35 * 80
-32 + 0.1X = -28

Solving
-32 + 0.1X = -28

Solving for variable 'X'.

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

Add '32' to each side of the equation.
-32 + 32 + 0.1X = -28 + 32

Combine like terms: -32 + 32 = 0
0 + 0.1X = -28 + 32
0.1X = -28 + 32

Combine like terms: -28 + 32 = 4
0.1X = 4

Divide each side by '0.1'.
X = 40

Simplifying
X = 40

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