1=0.4x-0.8x-7

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Solution for 1=0.4x-0.8x-7 equation: 


Simplifying
1 = 0.4x + -0.8x + -7

Reorder the terms:
1 = -7 + 0.4x + -0.8x

Combine like terms: 0.4x + -0.8x = -0.4x
1 = -7 + -0.4x

Solving
1 = -7 + -0.4x

Solving for variable 'x'.

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

Add '0.4x' to each side of the equation.
1 + 0.4x = -7 + -0.4x + 0.4x

Combine like terms: -0.4x + 0.4x = 0.0
1 + 0.4x = -7 + 0.0
1 + 0.4x = -7

Add '-1' to each side of the equation.
1 + -1 + 0.4x = -7 + -1

Combine like terms: 1 + -1 = 0
0 + 0.4x = -7 + -1
0.4x = -7 + -1

Combine like terms: -7 + -1 = -8
0.4x = -8

Divide each side by '0.4'.
x = -20

Simplifying
x = -20

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