42=0.5(4*x)13

Solution for 42=0.5(4*x)13 equation:

Simplifying
42 = 0.5(4x) * 13

Remove parenthesis around (4x)
42 = 0.5 * 4x * 13

Reorder the terms for easier multiplication:
42 = 0.5 * 4 * 13x

Multiply 0.5 * 4
42 = 2 * 13x

Multiply 2 * 13
42 = 26x

Solving
42 = 26x

Solving for variable 'x'.

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

Add '-26x' to each side of the equation.
42 + -26x = 26x + -26x

Combine like terms: 26x + -26x = 0
42 + -26x = 0

Add '-42' to each side of the equation.
42 + -42 + -26x = 0 + -42

Combine like terms: 42 + -42 = 0
0 + -26x = 0 + -42
-26x = 0 + -42

Combine like terms: 0 + -42 = -42
-26x = -42

Divide each side by '-26'.
x = 1.615384615

Simplifying
x = 1.615384615