Question

7*5+(5*9-25):4
2*3*9-48:8*3
9*4+6*7-(2*7+54)

Answer 1

1)
$7 times 5 + (5 times 9 - 25) div 4 = \ 35 + (45 - 25) div 4 = \ 35 + 20 div 4 = 35 + 5 = 4.$
2)
$2 times 3 times 9 - 48 div 8 times 3 = 54 - 18 = 36$
3)
$9 times 4 + 6 times 7 - (2 times 7 + 54) = \ 36 + 42 - (14 + 54) = \ 36 + 42 - 68 = 10$