1=0.4x-0.9x-39

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Solution for 1=0.4x-0.9x-39 equation:


Simplifying
1 = 0.4x + -0.9x + -39

Reorder the terms:
1 = -39 + 0.4x + -0.9x

Combine like terms: 0.4x + -0.9x = -0.5x
1 = -39 + -0.5x

Solving
1 = -39 + -0.5x

Solving for variable 'x'.

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

Add '0.5x' to each side of the equation.
1 + 0.5x = -39 + -0.5x + 0.5x

Combine like terms: -0.5x + 0.5x = 0.0
1 + 0.5x = -39 + 0.0
1 + 0.5x = -39

Add '-1' to each side of the equation.
1 + -1 + 0.5x = -39 + -1

Combine like terms: 1 + -1 = 0
0 + 0.5x = -39 + -1
0.5x = -39 + -1

Combine like terms: -39 + -1 = -40
0.5x = -40

Divide each side by '0.5'.
x = -80

Simplifying
x = -80

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