Р=18х
меньш.сторона = 4х => 18х/ 4х = 9/2 ( или 4.5)
<span>(67т 5кг-49т 8кг)*5+31т 6ц*2= 153185 кг </span>
<span>
</span>
<span>67т=67000 кг</span>
<span>49 т= 49000 кг</span>
<span>31т= 31000кг</span>
<span>6ц= 600 кг</span>
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</span>
<span>1 действие) </span>
<span>67005-49008=17997 кг</span>
2)
17997*5=89985 кг
3) 31600*2=63200 кг
<span>4) 89985+63200 = 153185 кг </span>
<span> :)</span>
S=(V1-V2)t => t=S÷(V1-V2) = 60÷(15-12) = 20 часов
3 2/3х-1 5/6х=1 17/24-3 1/2
1 10/6х-5/6х=1 17/24-2 36/24
1 5/6х=-1 19/24
х=-43/24*6/11
х=-43/44