0.7x-0.1(5-x)=3.9

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Solution for 0.7x-0.1(5-x)=3.9 equation:


Simplifying
0.7x + -0.1(5 + -1x) = 3.9
0.7x + (5 * -0.1 + -1x * -0.1) = 3.9
0.7x + (-0.5 + 0.1x) = 3.9

Reorder the terms:
-0.5 + 0.7x + 0.1x = 3.9

Combine like terms: 0.7x + 0.1x = 0.8x
-0.5 + 0.8x = 3.9

Solving
-0.5 + 0.8x = 3.9

Solving for variable 'x'.

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

Add '0.5' to each side of the equation.
-0.5 + 0.5 + 0.8x = 3.9 + 0.5

Combine like terms: -0.5 + 0.5 = 0.0
0.0 + 0.8x = 3.9 + 0.5
0.8x = 3.9 + 0.5

Combine like terms: 3.9 + 0.5 = 4.4
0.8x = 4.4

Divide each side by '0.8'.
x = 5.5

Simplifying
x = 5.5

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