\(B=\frac{4}{31.7}+\frac{6}{7.41}+\frac{9}{10.41}+\frac{7}{10.57}\)
\(\frac{B}{5}=\frac{4}{31.35}+\frac{6}{35.41}+\frac{9}{41.50}+\frac{7}{50.57}\)
\(\frac{B}{5}=\frac{1}{31}-\frac{1}{35}+\frac{1}{35}-\frac{1}{41}+\frac{1}{41}-\frac{1}{50}+\frac{1}{50}-\frac{1}{57}\)
\(B=5\left(\frac{1}{31}-\frac{1}{57}\right)=5\cdot\frac{26}{1767}=\frac{130}{1767}\)
M = 4/31.7 + 6/7.41+ 9/10.41 + 7/10.57
C = 4 / 31 .7 + 6/ 7.41 + 9/10.41 + 7/10.57
A=4/7.31+6/7.41+9/10.41+7/10.57+13/57.14
A=4/19.31+6/7.41 +9/10.41+ 7/10.57
Tính A
A = 4/7.31 + 6/7.41 + 9/10.41 + 7/10.57 ; B = 7/19.31 + 5/19.43 + 3/23.43 + 11/23.57 Tính nhanh A/B
Bài 5: Thực hiện phép tính \(\dfrac{4}{7.31}+\dfrac{6}{7.41}+\dfrac{9}{10.41}+\dfrac{7}{10.57}\)
Cho M=\(\frac{4}{31.7}+\frac{6}{7.41}+\frac{9}{10.41}+\frac{7}{10.57}\)
Và N = \(\frac{7}{19.31}+\frac{5}{19.45}+\frac{3}{23.43}+\frac{11}{23.57}\)
Tính \(\frac{M}{N}\)
1) cho A=4/7.31+6/7.41+9/10.41+7/10.57
B= 7/19.31+5/19.43+3/23.43+11/23.57
Tính A/B
Tìm tỉ số A/B biết
A=4/7.31+6/7.41+9/10.41+7/10.57 và B=7/19.31+5/7.43+3/23.43+11/23.57
