(6.78)(0.4-X)=

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Solution for (6.78)(0.4-X)= equation: 


Simplifying
(6.78)(0.4 + -1X) = 0
(0.4 * 6.78 + -1X * 6.78) = 0
(2.712 + -6.78X) = 0

Solving
2.712 + -6.78X = 0

Solving for variable 'X'.

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

Add '-2.712' to each side of the equation.
2.712 + -2.712 + -6.78X = 0 + -2.712

Combine like terms: 2.712 + -2.712 = 0.000
0.000 + -6.78X = 0 + -2.712
-6.78X = 0 + -2.712

Combine like terms: 0 + -2.712 = -2.712
-6.78X = -2.712

Divide each side by '-6.78'.
X = 0.4

Simplifying
X = 0.4

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