2.1x-1.3x-4.6=2.2

Solution for 2.1x-1.3x-4.6=2.2 equation:

Simplifying
2.1x + -1.3x + -4.6 = 2.2

Reorder the terms:
-4.6 + 2.1x + -1.3x = 2.2

Combine like terms: 2.1x + -1.3x = 0.8x
-4.6 + 0.8x = 2.2

Solving
-4.6 + 0.8x = 2.2

Solving for variable 'x'.

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

Add '4.6' to each side of the equation.
-4.6 + 4.6 + 0.8x = 2.2 + 4.6

Combine like terms: -4.6 + 4.6 = 0.0
0.0 + 0.8x = 2.2 + 4.6
0.8x = 2.2 + 4.6

Combine like terms: 2.2 + 4.6 = 6.8
0.8x = 6.8

Divide each side by '0.8'.
x = 8.5

Simplifying
x = 8.5