Question

12-9pe8 ×8;-6-5pe7×14;(1pe3)×9-7;1pe2+9pe8×4pe3-2;

Answer 1

12-9pe8 ×8=

(12-9)/8 ×8+

3/8×8=

3

-6-5pe7×14=

(-6-5)/7 ×14=

-11/7 ×14=

-22

(1pe3)×9-7=

(1/3)×9-7=

3-7=

-4

1pe2+9pe8×4pe3-2=

1/2+ 9/8× 4/3-2=

1/2 + 3/2 -2=

4/2 -2=

2-2=

0