Question

321-x=450
20,4-x=-13,6
122-y=-200
50,3-y=72,4

Answer 1

x=-129

x=34

y=322

y=-22.1

Answer 2

321-х=450
х=321-450
х=-129;

20,4-х=-13,4
х=-13,4-20,4
х=-33,8;

122-у=-200
у=-200-122
у=-322;

50,3-у=72,4
у=72,4-50,3
у=22,1;