Question

Поможете??????????????????????

Answer 1

1) (9+а)+11=9+11=20+а
2) (16+b)=16+b
3) (a+17)+23=17+23=40+a
4) (b+22)+18=22+18=40+b
5) (18+x)+12=18+12=30+x
6) (43+y)+57=23+57=100+y

Желаю удачи:)

Answer 2

1) (9+a)+11 = 9+11+a = 20+a
2) (16+b)+4 = 16+4+b = 20+b
3) (a+17)+23 = a+17+23 = a+40
4) (b+22)+18 = b+22+18 = b+40
5) (18+x)+12 = 18+12+x = 30+ x
6) (43+y)+57 = 43+57+y = 100+y