Answer:
-35
Step-by-step explanation:
Using the rules of BIMDAS, division goes before addition, hence -20/2 which gives you -10
Put that in the equation and it would be:
-10 + (-15)
A negative and a positive make a negative hence, you could simply write it as:
-10 - 15
Which equals -35
So basically the mean is the average number.
add all of them then divide by 6 (aka how many fractions)
3x-2 = -x+10
or, 3x+x=10+2
or, 4x=12
or, x=12/4
So, x=3