(54*1/3) * (16*1/2) / (250*1/3) =
= (54/3) * (16/2) / (250/3) =
= 18 * 8 / (250/3) =
= 144 : (250/3) =
= 144/1 : (250/3) =
= 144/1 * (3/250) =
= (144*3)/250 =
= (72*3)/125 =
= 216/125 =
= 1 целая 91/125
или 1,728
S=a×b
134×29=3886
площадь 3886 дм
(3*7)^6 / 3^4*7^5=3^6*7^6 / 3^4*7^5=3^2*7=9*7=63. Ответ: 63.
84:7+120=12+120=132
90+45:15=90+3=93
160*2+75:3=320+25=345
41*2+180:20=82+9=91
246:2+300+50=123+350=473