Answer:

1.) 16

2.) - 37

Step-by-step explanation:

USING MDAS RULE

1.) 25 - 10 + 5 + 7 x 2 + 12

= 25 - 10 + 5 + 14 + 12

= 25 - 15 + 14 + 12

= 25 - 41

= 16

2.) 6 x 7 - 48 - 12 +5 x 2 - 9

= 6 x 7 - 48 - 12 + 5 x 2 - 9

= 42 - 48 - 12 + 5 x 2 - 9

= 42 - 48 - 12 + 10 - 9

= 42 - 48 - 22 - 9

= - 6 - 31

= -37

Sana makatulong :)