Question

If the product of 14 and a number is decreased by 7, and then the result is divided by 5, the answer is 7. What is the unknown number?


Select the best answer from the choices provided.



0



2



3



6

Answer 1

answer=(3) (14x-7)/5=7 cross multiply
14x-7=7*5
14x-7=35
14x=35+7
14x=42

x=42/14
x=3
ans.
Proof:
(14*3-7)/5=7
(42-7)/5=7
35=7*5
35=35