49-3x=34 ; 9y-89=55 ; 74-8z=2

Question

49-3x=34 ; 9y-89=55 ; 74-8z=2

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