X + y = 46 x is six more than four times the value of y so replace x with that 6+4y + y = 46 add 4y+y=5y so 6+5y=46 subtract 6 from both sides to remove the 6 in the left. 5y = 40 Divide both sides by 5, the coefficient of y. 5y/5=y and 40/5=8
Answer by JKismyhusbandbae: The mean is the average of all the numbers. You add all the numbers and divide by how many numbers you added to get the mean.