Question

Tìm X

a, \(\dfrac{3}{5}\) + X = \(\dfrac{1}{2}\) + 1             b, 3 : X = \(\dfrac{2}{3}\) + \(2\dfrac{1}{2}\)

Answer 1

a, 3/5 + x = 1/2 + 1

    3/5 + x = 3/2

             x  = 3/2 - 3/5

             x =      9/10

Answer 2

a)3/2-3/5

=15-10-6/10

=9/10

b)3:X=2/3+5/2

3:X=4/6+15/6

3:X=19/6

X=3:19/6

X=19/18

Answer 3

a) \(\dfrac{3}{5}+x=\dfrac{1}{2}+1\)

     \(\dfrac{3}{5}+x=\dfrac{3}{2}\) 

            \(x=\dfrac{3}{2}-\dfrac{3}{5}\)

            \(x=\dfrac{15}{10}-\dfrac{6}{10}\)

            \(x=\dfrac{9}{10}\)

b) \(3:x=\dfrac{2}{3}+2\dfrac{1}{2}\)

    \(3:x=\dfrac{2}{3}+\dfrac{5}{2}\)

    \(3:x=\dfrac{4}{6}+\dfrac{15}{6}\)

    \(3:x=\dfrac{19}{6}\)

         \(x=3:\dfrac{19}{6}\)

         \(x=\dfrac{18}{19}\)

         

         

Answer 4

b)3:X=2/3+5/2

    3:X=4/6+15/6

   3:X=19/6

     X=3:19/6

    X=18/19