2(9+x)*3.1459=100.52

Solution for 2(9+x)*3.1459=100.52 equation:

Simplifying
2(9 + x) * 3.1459 = 100.52

Reorder the terms for easier multiplication:
2 * 3.1459(9 + x) = 100.52

Multiply 2 * 3.1459
6.2918(9 + x) = 100.52
(9 * 6.2918 + x * 6.2918) = 100.52
(56.6262 + 6.2918x) = 100.52

Solving
56.6262 + 6.2918x = 100.52

Solving for variable 'x'.

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

Add '-56.6262' to each side of the equation.
56.6262 + -56.6262 + 6.2918x = 100.52 + -56.6262

Combine like terms: 56.6262 + -56.6262 = 0.0000
0.0000 + 6.2918x = 100.52 + -56.6262
6.2918x = 100.52 + -56.6262

Combine like terms: 100.52 + -56.6262 = 43.8938
6.2918x = 43.8938

Divide each side by '6.2918'.
x = 6.97635017

Simplifying
x = 6.97635017