7 = 2n - 2
n= a number so twice a number is 2n and 7 is 2 less than twice this number.
Answer:
use your head
Step-by-step explanation:
Answer:
The denominators of fractions are : 2 and 10
Step-by-step explanation:

By hit and trial method, if we put x = 2 and y = 10 then the resulting equation (1) is satisfied and all the conditions hold.
So, the denominators are 2 and 10
Yes, your answer is right.
25% of $160
= (25/100) * 160
= 0.25 * 160
= 40
$40 paid.
Balance owed = $160 - $40 = $120
Balance owed = $120