6?-8 * ?=22 ?4+? * 7=100 (730+450:9):10=

Question

6?-8 * ?=22

?4+? * 7=100

(730+450:9):10=

Answer 1

62-8*5=22

44+7*8=100

(730+450:9):10=78 

Answer 2

1.62-8*5=22

2.44+7*8=100

3.(730+450:9):10=78