Nguyễn Thị Thùy Dung
Giới thiệu về bản thân
Thử phiên bản mới
Thích khám phá mọi thứ,(kể cả khám phá vũ trụ)
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2024-07-30 09:53:22
a)\(\dfrac{5}{3}\)x\(\dfrac{4}{5}\)=\(\dfrac{5x4}{3x5}\)=\(\dfrac{20}{15}\)=\(\dfrac{4}{3}\)(rút gọn \(\dfrac{20}{15}\)=\(\dfrac{4}{3}\))
b)\(\dfrac{2}{3}\)x\(\dfrac{3}{7}\)=\(\dfrac{2x3}{3x7}\)=\(\dfrac{6}{21}\)=\(\dfrac{2}{7}\)(rút gọn\(\dfrac{6}{21}\)=\(\dfrac{2}{7}\))
c)\(\dfrac{7}{13}\)x\(\dfrac{13}{7}\)=\(\dfrac{7x13}{13x7}\)=\(\dfrac{91}{91}\)=1(rút gọn\(\dfrac{91}{91}\)=1)
2024-02-23 19:46:18
what does your father do ?