Question

7) 49 - 3x = 34; 8) 9y - 89 - 55; 9) 74-82-2. VT)​

Answer 1

49-3х=34; 3х=49-34; 3х=15; х=15:3; х=5

9у-89=55; 9у=55+89; 9у=144; у=144:9; у=16

74-8z=2; 8z=74-2; 8z=72; z=72:8; z=9

Answer 2

Ответ:

49-3х=34.

-3х=34-49

-3х=-15

х=-15/-3

х=5