Question

[Vu duc manh]

a)X:(111-99)=17x5

b)(509 + 355):X =840 :35

c)(X+1)+(X+2)+(X+3)+..(X+28) =462

d)890:X =35 dư 15

rut gon cac phân số 

12/36 

75/300

121/1111 

1313/1717

303/3003

1515/2424

Answer 1

[Quynh Vu]

\(\frac{12}{36}=\frac{1}{3}\)  ;    \(\frac{75}{300}=\frac{1}{4}\)   ;    \(\frac{1313}{1717}=\frac{13}{17}\)    ;      \(\frac{1515}{2424}=\frac{15}{24}\);       \(\frac{121}{1111}=\frac{11}{101}\)  \(\frac{303}{3003}=\frac{101}{1001}\)

Answer 2

[nguyễn hoàng tiến]

a,X=1020

b,X=20736

c,d, tự làm

\(\frac{1}{3};\frac{1}{4};\frac{11}{101};\frac{13}{17};\frac{101}{1001};\frac{5}{8}\)