Question

canu please solve this sum

Answer 1

Answer:

given,

  a = 3/5

b= 7/ -12

here,

|a+b| = | 3/5 + 7/ -12|

      = | 3×12/5×12 + 7× (-5)/ (-12)×(-5)|

     = |36/60 + (- 35) /60|

       = | (36 - 35) / 60|

       = | 1/60|

        = 1/60

again,

    |a| + |b| = |3/5| + | 7/ (-12)|

            = 3/5 + 7/(-12)

            = 3×12/5×12 + 7× (-5)/ (-12)×(-5)

            = 36/60 + (- 35) /60

          = (36 - 35) / 60

         = 1/60

∴ hence,

          |a+b| ≤ |a| + |b|

Answer 2

Answer:

Yes the answer is right