c) ( a + 92 × 13 - 4 752 ) : 7 + 50 ×2 = 114
( a + 1 196 - 4 752 ) : 7 + 100 = 114
( a + 1 196 - 4 752 ) : 7 = 114 - 100
( a + 1 196 - 4 752 ) : 7 = 14
a + 1 196 - 4 752 = 14 × 7
a = 98 + 4 752 - 1 196 → metoda mersului invers
a = 4 850 - 1 196
a = 3 654 → numarul
_____________________
( a : 45 + 987 × 4 ) : 5 + 13 200 = 14 000
( a : 45 + 3 948 ) : 5 = 14 000 - 13 200
( a : 45 + 3 948 ) : 5 = 800
a : 45 + 3 948 = 800 × 5
a : 45 + 3 948 = 4 000
a : 45 = 4 000 - 3 948
a : 45 = 52
a = 52 × 45
a = 2 340 → numarul
