Question
Irene has 12 black and yellow marbles. She has 4 more black marbles than yellow marbles. Find
  1. The number of yellow marbles she has.
  2. The number of black marbles she has.
4 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

Irene has 12 black and yellow marbles. She has 4 more black marbles than yellow marbles. Find
  1. The number of yellow marbles she has.
  2. The number of black marbles she has.