Question

Giúp mk với

Answer 1

a.x=7/5-3/10

   x=11/10

b.x=4/7:5/15

   x=12/7

Answer 2

a: x=7/5-3/10=14/10-3/10=11/10

b: x=4/7:5/15=4/7x3=12/7

Answer 3

7/6 - x = 3/10

x = 7/6 - 3/10

x = 13/15

4/7 : x = 5/15

x = 4/7 : 5/15

x = 12/7

Answer 4

a)\(x=\dfrac{7}{6}-\dfrac{3}{10}\)

\(x=\dfrac{35}{30}-\dfrac{9}{30}\)

\(x=\dfrac{26}{30}\)

\(x=\dfrac{13}{15}\)

b)\(x=\dfrac{4}{7}:\dfrac{5}{15}\)

\(x=\dfrac{4}{7}\times\dfrac{15}{5}\)

\(x=\dfrac{60}{35}\)

\(x=\dfrac{12}{7}\)