-5/11.7/15.-11/5.-45
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5^11.7^12+5^11.7^11/5^12.7^11+9.5^11.7^11
\(\frac{5^{11}.7^{12}+5^{11}.7^{11}}{5^{12}.7^{12}+9.5^{11}.7^{11}}=\frac{5^{11}.7^{11}\left(7+1\right)}{5^{11}.7^{11}\left(5.7+9\right)}=\frac{8}{44}=\frac{2}{11}\)
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a,(2^10.3^10-2^10.3^9) : (2^9.3^10)
b,(11.3^22.3^7-9^15) : (2.3^14)^2
c,(5^11.7^12+5^11.7^12) : (5^12.7^11+9.5^11.7^11
. ((((^ là mũ)))))🍭
5^11.7^12+7^11.5^11/5^12.7^12+9.5^11.7^11 =?
\(\frac{5^{11}.7^{12}+5^{11}.7^{11}}{5^{12}.7^{12}+9.5^{11}.7^{11}}=\frac{5^{11}.7^{11}\left(7+1\right)}{5^{11}.7^{11}\left(5.7+9\right)}=\frac{8}{44}=\frac{2}{11}\)
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Xem thêm câu trả lời
5^11.7^12+7^11.5^11/5^12.7^12+9.5^11.7^11
a)2^10.3^10:2^10.3^9/2^9.3^10.
b)5^11.7^12+5^11.7^11/5^12.7^12+9.5^11.7^11
bài 1 tính
5.4^12.9^9-4.3^20.8^9/5.2^2^29.9^16-7.2^29.27^6/5^11.7^12+5^11.7^11/5^12.7^12+9.5^15.7^11
A=2^10.3^10-2^10.3^9/2^9.3^10
B=5^11.7^12+7^11.5^11/5^12.7^12+9.5^11.7^11
a 13/15:26/45
b 4.5:1.2
c 8/9:2
d 3 gio 45 phut x 5
e 11.7:4.5
g 29phut 12giay:14
Tính nhanh : -5/11.7/11-5/11.8/11+-6/11
\(\frac{-5}{11}\times\frac{7}{11}-\frac{5}{11}\times\frac{8}{11}+\frac{-6}{11}\)
\(=\left(\frac{-5}{11}+\frac{5}{11}\right)\times\left(\frac{8}{11}-\frac{7}{11}\right)\times\frac{-6}{11}\)
\(=0\times\frac{1}{11}\times\frac{-6}{7}\)
\(=0.\)
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