Question

Dau coroana la cel mai bun raspuns
Dar vreau explicat​

Answer 1

4) x-10=10 => x=10+10=20

5) 11=x-10 => x=10+11=> x=21

6) 3-x=5 =>x=3-5 => x= - 2

7) 7=5-x => x=5-7 => x= - 2

8) 6x=60 => x=60/6 => x=10

9) 54=9x => x=6

10) x:9=1 => x=9*1 => x=9

11) 2=x:9 => x=9*2 => x=18

12) -20 : x=10 => x=- 20 : 10 => x= - 2

13) - 3 = -18 : x =>( -18) :( -3 )=> x=6

14) - 4x+12 =0 => -4x= - 12 => x=3

15) 4+4x=48 => 4x=48-4 => 4x=44 => x=11

16) 22=2x+8 => 2x=22-8 => 2x=14 => x=7

17) - 2x - 6 = - 18 => -2x = - 18 + 6 => -2x= - 12 => x=6

18 ) 4=2x-10 => 2x=14 => x=14/2 => x=7