2(9+x)*3.14=100.48

Solution for 2(9+x)*3.14=100.48 equation:

Simplifying
2(9 + x) * 3.14 = 100.48

Reorder the terms for easier multiplication:
2 * 3.14(9 + x) = 100.48

Multiply 2 * 3.14
6.28(9 + x) = 100.48
(9 * 6.28 + x * 6.28) = 100.48
(56.52 + 6.28x) = 100.48

Solving
56.52 + 6.28x = 100.48

Solving for variable 'x'.

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

Add '-56.52' to each side of the equation.
56.52 + -56.52 + 6.28x = 100.48 + -56.52

Combine like terms: 56.52 + -56.52 = 0.00
0.00 + 6.28x = 100.48 + -56.52
6.28x = 100.48 + -56.52

Combine like terms: 100.48 + -56.52 = 43.96
6.28x = 43.96

Divide each side by '6.28'.
x = 7

Simplifying
x = 7