Question

a)(x+15)-8=17 б) (24+x)-21=10 (45-y)+18=58

Answer 1

а)(х+15)-8=17
х+15-8=17
х=17-15+8
х=10
б)(24+х)-21=10
24+х-21=10
х=10-24+21
х=7
в)(45-у)+18=58
45-у+18=58
-у=58-45-18
-у=-5
у=5