Question

a) 39 . ( x - 5) = 0

b) (30 -x) . 4 = 92

Answer 1

a)x=N*

b)23;x=7 kmiknha

Answer 2

a) 39 . (x - 5 ) = 0

            x - 5 = 0 : 39

            x - 5 = 0

                x = 0 + 5 

               x = 5

b) ( 30 - x ) . 4 = 92

               30 . x = 92 : 4

               30 . x = 23

                     x = 23 : 30

                    x =\(\frac{23}{30}\)

Answer 3

a) 39 . ( x - 5 ) = 0

x - 5 = 0 : 39

x - 5 = 0

x = 0 + 5

x = 5

b) ( 30 - x ) . 4 = 92

30 - x = 92 : 4

30 - x = 23

x = 30 - 23

x = 7

Answer 4

a) 39 . ( x - 5 ) = 0

x - 5 = 0 : 39

x - 5 = 0

x = 0 + 5

x = 5

b) ( 30 - x ) . 4 = 92

30 - x = 92 : 4

30 - x = 23

x = 30 - 23

x = 7