Câu hỏi của Rin123

Question

Làm bài 7 và bài 8 hộ mình với

Nguyễn Huy Tú · Accepted Answer

Câu 8

a, $\dfrac{4}{5}+\dfrac{3}{8}+\dfrac{1}{4}=\dfrac{16.4}{80}+\dfrac{30}{80}+\dfrac{20}{80}=\dfrac{64+50}{80}=\dfrac{114}{80}=\dfrac{57}{40}$

b, $\dfrac{5}{9}+\dfrac{2}{3}+\dfrac{1}{2}=\dfrac{10}{18}+\dfrac{12}{18}+\dfrac{9}{18}=\dfrac{22+9}{18}=\dfrac{31}{18}$

Câu trả lời:

Câu 8

a, $\dfrac{4}{5}+\dfrac{3}{8}+\dfrac{1}{4}=\dfrac{16.4}{80}+\dfrac{30}{80}+\dfrac{20}{80}=\dfrac{64+50}{80}=\dfrac{114}{80}=\dfrac{57}{40}$

b, $\dfrac{5}{9}+\dfrac{2}{3}+\dfrac{1}{2}=\dfrac{10}{18}+\dfrac{12}{18}+\dfrac{9}{18}=\dfrac{22+9}{18}=\dfrac{31}{18}$

phong · Answer

Câu 8

a, $45+38+14=16.480+3080+2080=64+5080=11480=574045+38+14=16.480+3080+2080=64+5080=11480=5740$

b, $59+23+12=1018+1218+918=22+918=3118$

Câu trả lời:

Câu 8

a, $45+38+14=16.480+3080+2080=64+5080=11480=574045+38+14=16.480+3080+2080=64+5080=11480=5740$

b, $59+23+12=1018+1218+918=22+918=3118$