(5.8*7)+(x*3)=55

Solution for (5.8*7)+(x*3)=55 equation:

Simplifying
(5.8 * 7) + (x * 3) = 55

Multiply 5.8 * 7
(40.6) + (x * 3) = 55
40.6 + (x * 3) = 55

Reorder the terms for easier multiplication:
40.6 + (3x) = 55

Solving
40.6 + (3x) = 55

Solving for variable 'x'.

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

Add '-40.6' to each side of the equation.
40.6 + -40.6 + (3x) = 55 + -40.6

Combine like terms: 40.6 + -40.6 = 0.0
0.0 + (3x) = 55 + -40.6
(3x) = 55 + -40.6

Combine like terms: 55 + -40.6 = 14.4
(3x) = 14.4

Divide each side by '3'.
x = 4.8

Simplifying
x = 4.8