\(\frac{17.8.23.\left(-80\right).3}{23.16.17.4}=\frac{8.\left(-80\right).3}{16.4.17}=\frac{1.\left(-20\right).3}{2.1.17}=\frac{\left(-10\right).3}{1.17}=\frac{-30}{17}=-1\frac{13}{17}\)

Bằng -30 nha bạn chắc chắn 100%

a) \(17+188+183=205+183=388\)

b) \(80-\left[130-\left(12-4\right)^2\right]\)

\(=80-\left(130-64\right)\)

\(80-66=14\)

c) \(2^3.17-2^3.14\)

\(8.17-8.14\)

\(=8.\left(17-14\right)\)

\(=8.3=24\)

a) \(\frac{17}{23}.\frac{18}{16}.\frac{23}{17}-\left(-80\right)-\frac{3}{4}\)

= \(\frac{17.18.23}{23.16.17}+80-\frac{3}{4}\)

= \(\frac{9}{8}+80-\frac{3}{4}\)

= \(\frac{3}{8}+80=\frac{643}{8}\)

b) \(\frac{5}{11}.\frac{18}{29}-\frac{5}{11}.\frac{8}{29}+\frac{5}{11}.\frac{19}{29}\)

= \(\frac{5}{11}.\left(\frac{18}{29}-\frac{8}{29}+\frac{19}{29}\right)\)

= \(\frac{5}{11}.1=\frac{5}{11}\)

c) \(\left(\frac{13}{23}+\frac{1313}{2323}-\frac{131313}{232323}\right).\left(\frac{1}{3}+\frac{1}{4}-\frac{7}{12}\right)\)

= \(\left(\frac{13}{23}+\frac{1313}{2323}-\frac{131313}{232323}\right).0\)

= \(0\)

-  1/4+17/50 +31/100=25/100+34/100+31/100 =90/100=0,9

-   3/4 +15/40+69/300=0,75+0,375+0,23=1,355

-    42/700+45/120+17/80=0,06+0,375+0,2125 = 0,6475

k cho mk vs

ai trả lời nhanh nhâts sẽ được

sẽ đc j???

3/11 + 17/4 + 8/11 + 17/4 - 4/17

( 3/11 + 8/11 ) + ( 17/4 + 17/4 ) - 4/17

1 + 17/2 - 4/17

19/2 - 4/17

315/34

1.

A.16

B.102

2.

SSH=( 80-4):4+1=20

TỔNG A= (80+4)*20:2=840