How to solve for x ?

Question

π•3.6² • X = 2π•3.6• X + 2π•3.6²

Answer 1

π * 3.6²x = 2π * 3.6x + 2π * 3.6²

Let's factor our 3.6 so we can cancel them out:

3.6(3.6πx) = 3.6(2πx + 2π * 3.6)

3.6πx = 2πx + 2π * 3.6

Subtract 2πx from both sides:

1.6πx = 2π * 3.6

Divide (or factor out) both sides by π:

1.6x = 2 * 3.6

1.6x = 7.2

Divide both sides by 1.6:

x = 4.5

Answer 2

π•3.6² • X = 2π•3.6• X + 2π•3.6²

12.96πx = 7.2πx + 25.92π

12.96πx - 7.2πx = 25.92π

5.76πx = 25.92π

x = 25.92π/5.76π = 4.5