Question

rezolvați următoarele ecuații unde x este număr natural
a)5a-13=3a+5
b)9+3a=24-2a
c)7a+2=4a+17
d)4a-3=11-3a

Answer 1

5a-3a egal13 plus 5 adica 18
2a egal 18
a egal 9

9 plus 3a egal 24-2a
3a plus 2a egal 24-9
5a egal 15
a egal 3

7a plus 2 egal 4a plus 17
7a -4a egal 17 -2
3a egal 15
a egal 5

4a-3 egal 11-3a
4a plus 3a egal 11 plus 3
7a egal 14
a egal 2

Answer 2

A) 5a-3a=13+5 => 2a=18=> a= 18:2 a=9
b) 7a-4a=17-2 => 3a=15 a =15:3 a=5
c)8a-4a=21-5 4a=16 a =16:4 a=4
d) 3a+2a= 24-9 5a= 15 a=15:5 a=3