Tính: -14/52 + 15/21
Bai 1 tính
a) -14/52+15/21
b) -35/5+52/169
c) 75/225+11/-121
Bài 2
a)1/8+1/2+5/-8+5/12
b)(-1/8+7/16)+1/16
c)-5/13+(3/-5+10/26+-4/10)
a) -14/52+15/21
b) -35/5+52/169
c) 75/225+11/-121
Bài 2
a)1/8+1/2+5/-8+5/12
b)(-1/8+7/16)+1/16
c)-5/13+(3/-5+10/26+-4/10)