x+(x+0.3)+2x=5.40

Solution for x+(x+0.3)+2x=5.40 equation:

Simplifying
x + (x + 0.3) + 2x = 5.40

Reorder the terms:
x + (0.3 + x) + 2x = 5.40

Remove parenthesis around (0.3 + x)
x + 0.3 + x + 2x = 5.40

Reorder the terms:
0.3 + x + x + 2x = 5.40

Combine like terms: x + x = 2x
0.3 + 2x + 2x = 5.40

Combine like terms: 2x + 2x = 4x
0.3 + 4x = 5.40

Solving
0.3 + 4x = 5.40

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-0.3' to each side of the equation.
0.3 + -0.3 + 4x = 5.40 + -0.3

Combine like terms: 0.3 + -0.3 = 0.0
0.0 + 4x = 5.40 + -0.3
4x = 5.40 + -0.3

Combine like terms: 5.40 + -0.3 = 5.1
4x = 5.1

Divide each side by '4'.
x = 1.275

Simplifying
x = 1.275