Operaciones cobinadas

3x5 + (18:6) + 2x3= ?

5+3 - 4 + (6x7) - (18:3) = ?

(72:9) + 3 - 5 + (4x5) = ?

100 - 52 - (56:7) + 13 = ?

6-4 x (54:6) + 18 - (2x3) = ?

7 x (48:8) + (27:3) - 5x2 = ?