Factor the expression
3x +9
The factored expression is

Simplify the expression. -2/5(10+15m-20n)

Explain how you can find the missing fraction in 3 4/5 / (blank) 2 5/7. then find the missing fraction.

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest