решить задачу разными способами (60+30)×5; (30+20)×4; (2+4)×70; (5+4×30; (20+50)×6; (60+30)×3; (80+10)×8; (50+3)×10

(60+30)*5=450(30+20)*4=200(2+4)*70=420(5+4)*30=270(20+50)*6=420(60+30)*3=270(80+10)*8=720(50+3)*10=530