0.3+0.4(20)=0.1(x+10)

Solution for 0.3+0.4(20)=0.1(x+10) equation:

Simplifying
0.3 + 0.4(20) = 0.1(x + 10)

Multiply 0.4 * 20
0.3 + 8 = 0.1(x + 10)

Combine like terms: 0.3 + 8 = 8.3
8.3 = 0.1(x + 10)

Reorder the terms:
8.3 = 0.1(10 + x)
8.3 = (10 * 0.1 + x * 0.1)
8.3 = (1 + 0.1x)

Solving
8.3 = 1 + 0.1x

Solving for variable 'x'.

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

Add '-0.1x' to each side of the equation.
8.3 + -0.1x = 1 + 0.1x + -0.1x

Combine like terms: 0.1x + -0.1x = 0.0
8.3 + -0.1x = 1 + 0.0
8.3 + -0.1x = 1

Add '-8.3' to each side of the equation.
8.3 + -8.3 + -0.1x = 1 + -8.3

Combine like terms: 8.3 + -8.3 = 0.0
0.0 + -0.1x = 1 + -8.3
-0.1x = 1 + -8.3

Combine like terms: 1 + -8.3 = -7.3
-0.1x = -7.3

Divide each side by '-0.1'.
x = 73

Simplifying
x = 73