70 - 49 : 7 - 30 = 33
1) 49 :7 = 7
2) 70 - 7 = 63
3) 63 - 30 = 33
79 - 16 + 40 : 8 = 68
1) 40 : 8 = 5
2) 79 - 16 = 63
3) 63 + 5 = 68
70 - 49 : 7 - 30 = 33
1) 49 :7 = 7
2) 70 - 7 = 63
3) 63 - 30 = 33
79 - 16 + 40 : 8 = 68
1) 40 : 8 = 5
2) 79 - 16 = 63
3) 63 + 5 = 68