3(.20)+.05x=0.30(x+3)

Solution for 3(.20)+.05x=0.30(x+3) equation:

Simplifying
3(0.20) + 0.05x = 0.30(x + 3)

Multiply 3 * 0.20
0.6 + 0.05x = 0.30(x + 3)

Reorder the terms:
0.6 + 0.05x = 0.30(3 + x)
0.6 + 0.05x = (3 * 0.30 + x * 0.30)
0.6 + 0.05x = (0.9 + 0.30x)

Solving
0.6 + 0.05x = 0.9 + 0.30x

Solving for variable 'x'.

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

Add '-0.30x' to each side of the equation.
0.6 + 0.05x + -0.30x = 0.9 + 0.30x + -0.30x

Combine like terms: 0.05x + -0.30x = -0.25x
0.6 + -0.25x = 0.9 + 0.30x + -0.30x

Combine like terms: 0.30x + -0.30x = 0.00
0.6 + -0.25x = 0.9 + 0.00
0.6 + -0.25x = 0.9

Add '-0.6' to each side of the equation.
0.6 + -0.6 + -0.25x = 0.9 + -0.6

Combine like terms: 0.6 + -0.6 = 0.0
0.0 + -0.25x = 0.9 + -0.6
-0.25x = 0.9 + -0.6

Combine like terms: 0.9 + -0.6 = 0.3
-0.25x = 0.3

Divide each side by '-0.25'.
x = -1.2

Simplifying
x = -1.2