6.4x-3.9(x-1)=7.1

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Solution for 6.4x-3.9(x-1)=7.1 equation: 


Simplifying
6.4x + -3.9(x + -1) = 7.1

Reorder the terms:
6.4x + -3.9(-1 + x) = 7.1
6.4x + (-1 * -3.9 + x * -3.9) = 7.1
6.4x + (3.9 + -3.9x) = 7.1

Reorder the terms:
3.9 + 6.4x + -3.9x = 7.1

Combine like terms: 6.4x + -3.9x = 2.5x
3.9 + 2.5x = 7.1

Solving
3.9 + 2.5x = 7.1

Solving for variable 'x'.

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

Add '-3.9' to each side of the equation.
3.9 + -3.9 + 2.5x = 7.1 + -3.9

Combine like terms: 3.9 + -3.9 = 0.0
0.0 + 2.5x = 7.1 + -3.9
2.5x = 7.1 + -3.9

Combine like terms: 7.1 + -3.9 = 3.2
2.5x = 3.2

Divide each side by '2.5'.
x = 1.28

Simplifying
x = 1.28

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