1(9+a)+11 = 9 + a + 11 = a + 202(16+ b)+4 = 32 + 2b + 4 = 2b + 363 (a+17)+23 = 3a + 51 + 23 = 3a + 744(b+22)+18 = 4b + 88 + 18 = 4b + 1065 (18+x)+12 = 18 + x + 12 = x + 306 (43+y) +57 = 43 + y + 57 = y + 100
1(9+a)+11 = 9 + a + 11 = a + 20
2(16+ b)+4 = 32 + 2b + 4 = 2b + 36
3 (a+17)+23 = 3a + 51 + 23 = 3a + 74
4(b+22)+18 = 4b + 88 + 18 = 4b + 106
5 (18+x)+12 = 18 + x + 12 = x + 30
6 (43+y) +57 = 43 + y + 57 = y + 100