2(3.1+5*3.1)=x

Solution for 2(3.1+5*3.1)=x equation:

Simplifying
2(3.1 + 5 * 3.1) = x

Multiply 5 * 3.1
2(3.1 + 15.5) = x

Combine like terms: 3.1 + 15.5 = 18.6
2(18.6) = x

Multiply 2 * 18.6
37.2 = x

Solving
37.2 = 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.
37.2 + -1x = x + -1x

Combine like terms: x + -1x = 0
37.2 + -1x = 0

Add '-37.2' to each side of the equation.
37.2 + -37.2 + -1x = 0 + -37.2

Combine like terms: 37.2 + -37.2 = 0.0
0.0 + -1x = 0 + -37.2
-1x = 0 + -37.2

Combine like terms: 0 + -37.2 = -37.2
-1x = -37.2

Divide each side by '-1'.
x = 37.2

Simplifying
x = 37.2