Question

x : 3 - 180 = 90; 360 + x * 3 = 720

Answer 1

х:3=90+180
Х:3=270
Х=270:3
Х=90

Answer 2

360+х*3=720

Answer 3

360+х*3=720
360+3х=720

Answer 4

x:3=180+90
x:3=270
x=3×270
x=810
Ответ:x=810