3.89-5.2=x

Solution for 3.89-5.2=x equation:

Simplifying
3.89 + -5.2 = x

Combine like terms: 3.89 + -5.2 = -1.31
-1.31 = x

Solving
-1.31 = 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.
-1.31 + -1x = x + -1x

Combine like terms: x + -1x = 0
-1.31 + -1x = 0

Add '1.31' to each side of the equation.
-1.31 + 1.31 + -1x = 0 + 1.31

Combine like terms: -1.31 + 1.31 = 0.00
0.00 + -1x = 0 + 1.31
-1x = 0 + 1.31

Combine like terms: 0 + 1.31 = 1.31
-1x = 1.31

Divide each side by '-1'.
x = -1.31

Simplifying
x = -1.31