\(\left[5^{30}+4.\left(12-7\right)^{30}\right]:5^{29}\)
\(=\left(5^{30}+4.5^{30}\right):5^{29}\)
\(=5^{30}\left(1+4\right):5^{29}\)
\(=5^{30}.5:5^{29}\)
\(=5^{31}:5^{29}\)
\(=5^2\)
1)x+7/12=17/18-1/9
2)29/30-(13/23+x)=7/69
3)×/15=4/10
4)×-3/49=-2/7
5)×/3=1/y
a )15/16:3/8x3/4
b) 5/11 x 18/29 - 5/11 x 8/29 + 5/11 x 19/29
c) 189/30 - (59/30 - 3/5 )
d) 2/3 + 2/7 - 1/14
1 + 3/7 - 3/28
các bạn giúp mình nha
\(\left(\frac{17}{28}+\frac{18}{29}-\frac{19}{30}-\frac{30}{31}\right).\left(-\frac{5}{12}+\frac{1}{4}+\frac{1}{6}\right)\)
câu trả lời cho câu hỏi của Huong Le Thị Lan: 1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32.
=(1+32)+(2+31)+(3+30)+(4+29)+(5+28)+(6+27)+(7+26)+(8+25)+(9+24)+(10+23)+(11+22)+(12+21)+(13+20)+(14+19)+(15+18)+(16+17)
=33+33+33+33+33+33+33+33+33+33+33+33+33+33+33+33. =33.16 (dấu chấm là dấu nhân)=528
1+2-3-4+5+6-7-8+9+...+28-29-30+31+32?
tính
1-2-3+4-5-6+7-8-9+28-29-30
1+2+3+4+5+6+7+8+9+10=
11+12+13+14+15+16+17+18+19+20=
1+2+3+4+5+6+7+8+9+10+11+12+13+14 +15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30-50-53=
bạn5 bạn nào làm nhanh mình sẽ tích cho bạn đó
-8.4+19=
-11.3-28=
4.(-15)-18=
19-4.(-12)=
-25.(-3)-54=
-16-7.(-4)+24:(-8)=
15:(-3)+30-7.(-3)=
-48:(-4)+12.(-5)=
-29+65:(-5)+23=
15:(-5)-17-12.(-5)=
28.(-4)-17=
-19-7.4=
-14.(-2)-16=
13.(-3)-65-4.(-6)=
-24-8.(-6)+28=
mn giúp mk với,ai nhanh mk tick
So sánh
A=29^29+5/29^30+5
B=29^30+5/29^31+5
AI NHANH MINH TICK CHO
