Answer
-2(8-7) is -2 simplified
Step-by-step explanation:
8-7=1
-2*1=2
-2
Im no good at at all but im gonna guess the Second one...sorry if its wrong
Hack way
25%=1/4
13 is 1/4 of something
1/4 times 4=4/4=1
therefor
13 times 4=1 whole
13*4=52
the original number is 52