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(28:a)+15=22
Va rog !! AM NEVOIE URGENT!!


Răspuns :

( 28 : a ) + 15 = 22

28 : a = 22 - 15

28 : a = 7

a = 28 : 7

a = 4

Verificare :

( 28 : 4 ) + 15 =

7 + 15 = 22
( 28:a ) + 15 = 22
22 - 15 = 7 
28 : a = 7
a = 28 : 7
a = 4
V: (28:4) + 15 = 7 + 15 = 22
22=22

Sper ca te-am ajutat!