Question

7 was multiplied by a particular number. This product was added to 12, then divided by 10. The resulting quotient was -3. Give the initial number.

Answer 1

-6

Explanation:

we use X to try and find the number to which 7was multiplied

so it's 7x+12=-3

if you cross multiply you will get

7x+12=-3

10

7x+12=-30

-30-(-12)=-42

7x=-42

X=-6