40(0.9-x)=1

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Solution for 40(0.9-x)=1 equation: 


Simplifying
40(0.9 + -1x) = 1
(0.9 * 40 + -1x * 40) = 1
(36 + -40x) = 1

Solving
36 + -40x = 1

Solving for variable 'x'.

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

Add '-36' to each side of the equation.
36 + -36 + -40x = 1 + -36

Combine like terms: 36 + -36 = 0
0 + -40x = 1 + -36
-40x = 1 + -36

Combine like terms: 1 + -36 = -35
-40x = -35

Divide each side by '-40'.
x = 0.875

Simplifying
x = 0.875

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