Problema Solution
An unknow quantity is decreased by six. This result is then divided by twenty. Ten is subtracted from this result and negativ two is obtained.
Answer provided by our tutors
Suppose unknow quantity = x
(x-6)/20 - 10 = -2
(x-6)/20 = -2 + 10
(x-6)/20 = 8
x - 6 = 8*20 = 160
x = 160+6 = 166