Answer:
Step-by-step explanation:
If you wanna decrease the number 10 by 90%, It's just 9. You simply need to multiply a/100 at the number you try to decrease by a%.
12
Do 1 divided by 4 and you get 0.25 then divide 3 and 0.25 and you get 12
1 + 1x
OR
1 + x
They mean the same thing! Hope this helps!
