75-x=75 X+4=64 89-y=0

Question

75-x=75 X+4=64 89-y=0

Answer 1

75-х=75
х=75-75
х=0
х+4=64
х=64-4
х=60
89-у=0
у=89-0
у=89

Answer 2

75-150=75;60+4=64;89-89=о