Question

Tìm X ; Y:

6 /7 - Y = 3/ 4                                                           2/7 : Y = 1/2 + 5/ 12

X - 8/ 11 = 8/18 x 3/4                                  X + 7 / 32 : 21 /16 = 3/ 10

Answer 1

bạn giải hộ mình cái này với mình đang cần gấp

tìm x

x*7/10=21/4

Answer 2

\(\frac{6}{7}\)- Y = \(\frac{3}{4}\)

Y             = \(\frac{6}{7}\)- \(\frac{3}{4}\)

Y            = \(\frac{3}{28}\)

Trả lơi 1 cái thôi nha tính lâu lắm

^_^

Answer 3

Bài làm

a) \(\frac{6}{7}-y=\frac{3}{4}\)

\(y=\frac{6}{7}-\frac{3}{4}\)

\(y=\frac{24}{28}-\frac{21}{28}\)

\(y=\frac{3}{28}\)

Vậy ​\(y=\frac{3}{28}\)​

b) \(\frac{2}{7}:y=\frac{1}{2}+\frac{5}{12}\)

\(\frac{2}{7}:y=\frac{6}{12}+\frac{5}{12}\)

\(\frac{2}{7}:y=\frac{11}{12}\)

\(y=\frac{2}{7}:\frac{11}{12}\)

\(y=\frac{2}{7}x\frac{12}{11}\)

\(y=\frac{24}{77}\)

Vậy \(y=\frac{24}{77}\)

c) \(X-\frac{8}{11}=\frac{8}{18}x\frac{3}{4}\)

\(X-\frac{8}{11}=\frac{1}{3}\)

\(X=\frac{1}{3}+\frac{8}{11}\)

\(X=\frac{11}{33}+\frac{24}{33}\)

\(X=\frac{35}{33}\)

Vậy \(X=\frac{35}{33}\)

d) \(X+\frac{7}{32}:\frac{21}{16}=\frac{3}{10}\)

\(X+\frac{7}{32}=\frac{3}{10}x\frac{21}{16}\)

\(X+\frac{7}{32}=\frac{63}{160}\)

\(X=\frac{63}{160}-\frac{7}{32}\)

\(X=\frac{63}{160}-\frac{35}{160}\)

\(X=\frac{28}{160}\)

\(X=\frac{7}{40}\)

Vậy \(X=\frac{7}{40}\)