Answer:
Fraction models can help clarify ideas that are often confused in a purely symbolic mode and construct mental terms that help them to perform fraction tasks meaningfully.
Step-by-step explanation:
2x6=12
3x6=18
12+18=22
2x3=6
2x6=12
6+12=18
The answer is D.
Find common factors of denominators.
15+10+4/20= 29/20= 1 9/20 :)
2+2=4
a^2+b^2=c^2
15^2-4^2
=225-16
=209
