3.2+-7.8=x

Solution for 3.2+-7.8=x equation:

Simplifying
3.2 + -7.8 = x

Combine like terms: 3.2 + -7.8 = -4.6
-4.6 = x

Solving
-4.6 = 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.
-4.6 + -1x = x + -1x

Combine like terms: x + -1x = 0
-4.6 + -1x = 0

Add '4.6' to each side of the equation.
-4.6 + 4.6 + -1x = 0 + 4.6

Combine like terms: -4.6 + 4.6 = 0.0
0.0 + -1x = 0 + 4.6
-1x = 0 + 4.6

Combine like terms: 0 + 4.6 = 4.6
-1x = 4.6

Divide each side by '-1'.
x = -4.6

Simplifying
x = -4.6