Question

34 + (21 - x) = (3747 - 30) - 3746

Answer 1

34 + ( 21 - x ) = 3747 - 30 - 3746

34 + ( 21 - x ) = -29

21 - x = -29 - 34 = -63

x = 21 - ( -63 )

x = 21 + 63 = 84

Answer 2

34 + (21 - x) =  -29

         (21 - x) = -29 - 34

        ( 21 - x ) = -63

                  x   = 21 - -63

                  x   = 84

Answer 3

34+(21-x) =(3747-30)-3746

34+(21-x) =3747-30-3746

34+(21-x) =(-30)

21-x=(-30)-34

21-x=64

X=21-64

X=57