-6.4-(7.9)=x

Solution for -6.4-(7.9)=x equation:

Simplifying
-6.4 + -1(7.9) = x

Multiply -1 * 7.9
-6.4 + -7.9 = x

Combine like terms: -6.4 + -7.9 = -14.3
-14.3 = x

Solving
-14.3 = 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.
-14.3 + -1x = x + -1x

Combine like terms: x + -1x = 0
-14.3 + -1x = 0

Add '14.3' to each side of the equation.
-14.3 + 14.3 + -1x = 0 + 14.3

Combine like terms: -14.3 + 14.3 = 0.0
0.0 + -1x = 0 + 14.3
-1x = 0 + 14.3

Combine like terms: 0 + 14.3 = 14.3
-1x = 14.3

Divide each side by '-1'.
x = -14.3

Simplifying
x = -14.3