6.4-.8x+4.2=5.8

Solution for 6.4-.8x+4.2=5.8 equation:

Simplifying
6.4 + -0.8x + 4.2 = 5.8

Reorder the terms:
6.4 + 4.2 + -0.8x = 5.8

Combine like terms: 6.4 + 4.2 = 10.6
10.6 + -0.8x = 5.8

Solving
10.6 + -0.8x = 5.8

Solving for variable 'x'.

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

Add '-10.6' to each side of the equation.
10.6 + -10.6 + -0.8x = 5.8 + -10.6

Combine like terms: 10.6 + -10.6 = 0.0
0.0 + -0.8x = 5.8 + -10.6
-0.8x = 5.8 + -10.6

Combine like terms: 5.8 + -10.6 = -4.8
-0.8x = -4.8

Divide each side by '-0.8'.
x = 6

Simplifying
x = 6