Answer:
B.
Step-by-step explanation:
use distributive property
4*x + 4*3 = 4x+12
The mean is the average of a set of numbers, to find the mean, add all the numbers, then divide by the amount of numbers.
Answer:
R=10
Step-by-step explanation:
-2×-3=6
R=5×2
=10
9
Step-by-step explanation:
15x+12=19x-24
15x-19x=-24-12
-4x=-36/÷(-4)
x=9
You first put all the x on one side and numbers on the other and be careful about + and - and then you divide by everything with the x so you have only the x left and you get the aswer.