2(9+x)*3.14159=100.52

Solution for 2(9+x)*3.14159=100.52 equation:

Simplifying
2(9 + x) * 3.14159 = 100.52

Reorder the terms for easier multiplication:
2 * 3.14159(9 + x) = 100.52

Multiply 2 * 3.14159
6.28318(9 + x) = 100.52
(9 * 6.28318 + x * 6.28318) = 100.52
(56.54862 + 6.28318x) = 100.52

Solving
56.54862 + 6.28318x = 100.52

Solving for variable 'x'.

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

Add '-56.54862' to each side of the equation.
56.54862 + -56.54862 + 6.28318x = 100.52 + -56.54862

Combine like terms: 56.54862 + -56.54862 = 0.00000
0.00000 + 6.28318x = 100.52 + -56.54862
6.28318x = 100.52 + -56.54862

Combine like terms: 100.52 + -56.54862 = 43.97138
6.28318x = 43.97138

Divide each side by '6.28318'.
x = 6.998268393

Simplifying
x = 6.998268393