0.1(x+50)-0.03(x-20)=1.4

Solution for 0.1(x+50)-0.03(x-20)=1.4 equation:

Simplifying
0.1(x + 50) + -0.03(x + -20) = 1.4

Reorder the terms:
0.1(50 + x) + -0.03(x + -20) = 1.4
(50 * 0.1 + x * 0.1) + -0.03(x + -20) = 1.4
(5 + 0.1x) + -0.03(x + -20) = 1.4

Reorder the terms:
5 + 0.1x + -0.03(-20 + x) = 1.4
5 + 0.1x + (-20 * -0.03 + x * -0.03) = 1.4
5 + 0.1x + (0.6 + -0.03x) = 1.4

Reorder the terms:
5 + 0.6 + 0.1x + -0.03x = 1.4

Combine like terms: 5 + 0.6 = 5.6
5.6 + 0.1x + -0.03x = 1.4

Combine like terms: 0.1x + -0.03x = 0.07x
5.6 + 0.07x = 1.4

Solving
5.6 + 0.07x = 1.4

Solving for variable 'x'.

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

Add '-5.6' to each side of the equation.
5.6 + -5.6 + 0.07x = 1.4 + -5.6

Combine like terms: 5.6 + -5.6 = 0.0
0.0 + 0.07x = 1.4 + -5.6
0.07x = 1.4 + -5.6

Combine like terms: 1.4 + -5.6 = -4.2
0.07x = -4.2

Divide each side by '0.07'.
x = -60

Simplifying
x = -60