Question

a, 4/6 - (6/15 +1/5)

b, 2/3 - x= 8/21

c,x: 1/7 =6/7

d, 2-x =1/9 +2/3

Answer 1

\(\dfrac{4}{6}-\dfrac{3}{5}=\dfrac{2}{3}-\dfrac{3}{5}=\dfrac{1}{15}\\ x=\dfrac{2}{3}-\dfrac{8}{21}=\dfrac{2}{7}\\ x=\dfrac{6}{7}\times\dfrac{1}{7}=\dfrac{6}{49}\\ 2-x=\dfrac{7}{9}\\ x=2-\dfrac{7}{9}=\dfrac{11}{9}\)

Answer 2

\(a,\dfrac{4}{6}-\left(\dfrac{6}{15}+\dfrac{1}{5}\right)=\dfrac{4}{6}-\dfrac{3}{5}=\dfrac{1}{15}\)

\(b,x=\dfrac{2}{3}-\dfrac{8}{21}\)

\(x=\dfrac{2}{7}\)

\(c,x=\dfrac{6}{7}\times\dfrac{1}{7}\)

\(x=\dfrac{6}{49}\)

\(d,2-x=\dfrac{7}{9}\)

\(x=2-\dfrac{7}{9}\)

\(x=\dfrac{11}{9}\)