Question

Roberto has 20 crayons. 12 crayons are red. The rest are blue or yellow. He has two more blue crayons than yellow. How many yellow crayons does he have?

Answer 1

12=Red
8=blue or yellow
Blue is b
Yellow is y
What two numbers add up to 8 but the difference is 2.
5 and 3!
He would have 3 yellow crayons
Y-2=b

Answer 2

20 - 12 = 8

He has 8 blue and yellow crayons altogether.

Yellow = x
Blue = 2 + x

2 + x + x = 8

2 + 2x = 8

Subtract 2 to both sides

2x = 6

Divide 2 to both sides

x = 3.

He has 3 yellow crayons.