-1.1x+1.3(x+1.3)=19.88

Solution for -1.1x+1.3(x+1.3)=19.88 equation:

Simplifying
-1.1x + 1.3(x + 1.3) = 19.88

Reorder the terms:
-1.1x + 1.3(1.3 + x) = 19.88
-1.1x + (1.3 * 1.3 + x * 1.3) = 19.88
-1.1x + (1.69 + 1.3x) = 19.88

Reorder the terms:
1.69 + -1.1x + 1.3x = 19.88

Combine like terms: -1.1x + 1.3x = 0.2x
1.69 + 0.2x = 19.88

Solving
1.69 + 0.2x = 19.88

Solving for variable 'x'.

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

Add '-1.69' to each side of the equation.
1.69 + -1.69 + 0.2x = 19.88 + -1.69

Combine like terms: 1.69 + -1.69 = 0.00
0.00 + 0.2x = 19.88 + -1.69
0.2x = 19.88 + -1.69

Combine like terms: 19.88 + -1.69 = 18.19
0.2x = 18.19

Divide each side by '0.2'.
x = 90.95

Simplifying
x = 90.95