Question

oblicz x błagam o pomoc a) 20 *x = 4 2/5 b) x * 2 3/7= 34

Answer 1

a)

20 *x = 4 2/5

20x=22/5     /:20

x = 11/50

 

b)

x * 2 3/7= 34

17/7x=34     /*7/17

x = 14

Answer 2

a)

20 *x = 4 2/5

x = 4 i 2/5 : 20

x = 22/5 * 1/20

x = 22/100

x = 11/50

 

b)

x * 2 3/7= 34

x = 34 : 2 i 3/7

x = 34 : 17/7

x = 34/1 * 7/17

x = 14/1

x = 14