Ms karane orders a total of 350 black, blue and red pens for the school she orders 170 black pens and she orders 120 blue pens. Which equation can be used to find r the number of red pens ms.karone orders?

Respuesta :

Answer:

170+120+r=350

Step-by-step explanation:

Mibo

Step-by-step explanation:

The answer is

120 + 170 + r = 350

Where r = red pen