a/64 x 23 + 37 x 23 - 23 + 6,24
= ( 64 + 37 - 1 ) x 23 + 6,24
= 100 x 23 + 6,24
= 2300 + 6,24
= 2306,24
b/33,76 + 19,52 + 6,24
= ( 33,76 + 6,24 ) + 19,52
= 40 + 19,52
= 59,52
c/\(\dfrac{38}{11}+\left(\dfrac{16}{13}+\dfrac{6}{11}\right)\)
\(=\dfrac{38}{11}+\dfrac{16}{13}+\dfrac{6}{11}\)
\(=\left(\dfrac{38}{11}+\dfrac{6}{11}\right)+\dfrac{16}{13}\)
\(=4+\dfrac{16}{13}\)
\(=\dfrac{52}{13}+\dfrac{16}{13}\)
\(=\dfrac{68}{13}\)
d/\(\dfrac{3}{4}:\dfrac{3}{5}-\dfrac{1}{5}\)
\(=\dfrac{3}{4}\times\dfrac{5}{3}-\dfrac{1}{5}\)
\(=\dfrac{5}{4}-\dfrac{1}{5}\)
\(=\dfrac{25}{20}-\dfrac{4}{20}\)
\(=\dfrac{21}{20}\)
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bang 17

bang 17 nha

=17 nhé

ko biết

bang 0 nhe ban

Cách làm tn ạ

whatt>>>>>>>>>>>>

23 + 23 + 23 + 23

= 23 x 4

= 92

a) 65 000 ; 66 000 ; 67 000 ; 68 000 ; 69 000 ; 70 000 ; 71 000.

b) 85 700 ; 85 800 ; 85 900 ; 86 000 ; 86 100 ; 86 200 ; 86 300.

c) 23 450 ; 23 460 ; 23 470 ; 23 480 ; 23 490 ; 23 500 ; 23 510.

d) 23 458 ; 23 459 ; 23 460 ; 23 461 ; 23 462 ; 23 463 ; 23 464.

\(23.23.23.23.23.23.23=23^7\)

Số cần tìm là :

23 x 23 x 23 x 23 x 23 x 23 x 23 x 23 = 23⁷

edogawa