Answer:
x = - 10
Step-by-step explanation:
Average is calculated as
average =
, thus
= 3
Multiply both sides by 3 to clear the fraction
19 + x = 9 ( subtract 19 from both sides )
x = - 10
I think you take 5374.60.7 subtract 56.89 and then divide it by 22.70, that’s what I did and I got 234
-x - 50/10 = -2x + 150/10 <=== ur equation
-x + 2x = 150/10 + 50/10
x = 200/10 reduces to 20