Question

[NGỌC HÀ NGUYỄN]

b) x - 2/5 =  4/13

c) 12/ 7 - x = 5/8

d) 6/11 + x = 3/2

Answer 1

[ILoveMath]

\(b,x-\dfrac{2}{5}=\dfrac{4}{13}\\ \Rightarrow x=\dfrac{4}{13}+\dfrac{2}{5}\\ \Rightarrow x=\dfrac{46}{65}\\ c,\dfrac{12}{7}-x=\dfrac{5}{8}\\ \Rightarrow x=\dfrac{12}{7}-\dfrac{5}{8}\\ \Rightarrow x=\dfrac{61}{56}\\ d,\dfrac{6}{11}+x=\dfrac{3}{2}\\ \Rightarrow x=\dfrac{3}{2}-\dfrac{6}{11}\\ \Rightarrow x=\dfrac{21}{22}\)

Answer 2

[Nguyễn Huy Tú]

b, \(x=\dfrac{4}{13}+\dfrac{2}{5}=\dfrac{20+26}{5.13}=\dfrac{46}{65}\)

c, \(x=\dfrac{12}{7}-\dfrac{5}{8}=\dfrac{96-35}{56}=\dfrac{61}{56}\)

d, \(x=\dfrac{3}{2}-\dfrac{6}{11}=\dfrac{33-12}{22}=\dfrac{21}{22}\)