Answer:
His mistake is that he didn't multiply it -18 to the negative sign correctly. The negative sign and -18 have to multiply which turns -18 to a positive 18.
Step-by-step explanation:
-15-(-18)=-15 +(-18)
-15+18= -15 -18
3=33
no solution
Answer: 19.75/100
Step-by-step explanation:
A percentage is out of 100 so 19.75% is 19.75 out of 100
Answer:
1x1x1x1x1x1x1x1x1=1^9
Step-by-step explanation:
