(1.3)=x+2.1

Solution for (1.3)=x+2.1 equation:

Simplifying
(1.3) = x + 2.1
1.3 = x + 2.1

Reorder the terms:
1.3 = 2.1 + x

Solving
1.3 = 2.1 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
1.3 + -1x = 2.1 + x + -1x

Combine like terms: x + -1x = 0
1.3 + -1x = 2.1 + 0
1.3 + -1x = 2.1

Add '-1.3' to each side of the equation.
1.3 + -1.3 + -1x = 2.1 + -1.3

Combine like terms: 1.3 + -1.3 = 0.0
0.0 + -1x = 2.1 + -1.3
-1x = 2.1 + -1.3

Combine like terms: 2.1 + -1.3 = 0.8
-1x = 0.8

Divide each side by '-1'.
x = -0.8

Simplifying
x = -0.8