Question

what is formula please tell​

Answer 1

Answer:

$x = 30$

Step-by-step explanation:

$x + \frac{3x}{2} + \frac{x}{2} + 6x+90 = 360 \\ \\ \\ x + 2x + 6x = 360-90 \\ \\ \\ 9x = 360-90 \\ \\ \\ x = 30$