№19. Реши примеры: 55+43−9; 52+35−9; 52+41−5; 66+24−45; 38+12−18; 14+66−29; 23+26+7; 77+12+7; 41+26−8; 55+45−59; 52+38−29; 52+48−55.

55 + 43 − 9 = 89
52 + 35 − 9 = 78
52 + 41 − 5 = 88
66 + 24 − 45 = 45
38 + 12 − 18 = 32
14 + 66 − 29 = 51
23 + 26 + 7 = 56
77 + 12 + 7 = 96
41 + 26 − 8 = 59
55 + 45 − 59 = 41
52 + 38 − 29 = 61
52 + 48 − 55 = 45