Question

Мне срочноооооооо!!!!

Answer 1

(2*30+20)*9=(60+20)*9=80*9=720; (120-15*4):2=(120-60):2=60:2=30; (120-15)*(4:2)=105*2=210.

Answer 2

(2*30+20)*9=720
(2*30)+(20*9)=240
120-(15*4)/2=30
120-(15*4/2)=90
(120-15)*4/2=210