3.9(2.1x+4.8)=7.2

Solution for 3.9(2.1x+4.8)=7.2 equation:

Simplifying
3.9(2.1x + 4.8) = 7.2

Reorder the terms:
3.9(4.8 + 2.1x) = 7.2
(4.8 * 3.9 + 2.1x * 3.9) = 7.2
(18.72 + 8.19x) = 7.2

Solving
18.72 + 8.19x = 7.2

Solving for variable 'x'.

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

Add '-18.72' to each side of the equation.
18.72 + -18.72 + 8.19x = 7.2 + -18.72

Combine like terms: 18.72 + -18.72 = 0.00
0.00 + 8.19x = 7.2 + -18.72
8.19x = 7.2 + -18.72

Combine like terms: 7.2 + -18.72 = -11.52
8.19x = -11.52

Divide each side by '8.19'.
x = -1.406593407

Simplifying
x = -1.406593407