4.9-3.1=x

Solution for 4.9-3.1=x equation:

Simplifying
4.9 + -3.1 = x

Combine like terms: 4.9 + -3.1 = 1.8
1.8 = x

Solving
1.8 = 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.
1.8 + -1x = x + -1x

Combine like terms: x + -1x = 0
1.8 + -1x = 0

Add '-1.8' to each side of the equation.
1.8 + -1.8 + -1x = 0 + -1.8

Combine like terms: 1.8 + -1.8 = 0.0
0.0 + -1x = 0 + -1.8
-1x = 0 + -1.8

Combine like terms: 0 + -1.8 = -1.8
-1x = -1.8

Divide each side by '-1'.
x = 1.8

Simplifying
x = 1.8