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pakazakovyar
@pakazakovyar
June 2022
1
19
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1)-1.3 : 3.9 = х:0.6
2)0.72 : 0.24 = 0.9 : х
3)-3.6 + 4.8 * (-8 3/4 + 7 5/6)=
4)3.4 + 3 3/4 * (-2/15)=
5)17% от 250
6)340руб разделить на 12:5 (на части)
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Answers & Comments
alaed26
1)
-1.3*0.9=x*3.9 следует x=-1.3*0.9/3.9=-0.3
2)
0.72x=0.24*0.9 следует x=0.24*0.9/0.72=0.3
3)
-3.6+4.8*(249/12+150/12)
-3.6+4.8*(399/12)
-3.6+1915.2/12
-3.6+159.6=156
4)
3.4+33/4*(-2/15)=3.4+(-66/60)=3.4-1.1=2.3
5)
(17/100)*250=17*250/100=42.5
6)
340/12/5=340*5/12=141.6
1 votes
Thanks 1
pakazakovyar
спасибо
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Answers & Comments
-1.3*0.9=x*3.9 следует x=-1.3*0.9/3.9=-0.3
2)
0.72x=0.24*0.9 следует x=0.24*0.9/0.72=0.3
3)
-3.6+4.8*(249/12+150/12)
-3.6+4.8*(399/12)
-3.6+1915.2/12
-3.6+159.6=156
4)
3.4+33/4*(-2/15)=3.4+(-66/60)=3.4-1.1=2.3
5)
(17/100)*250=17*250/100=42.5
6)
340/12/5=340*5/12=141.6