Use Sketches to Show That:
A) $\frac { 20 } { 15 } = 1 \frac { 1 } { 3 }$

Use sketches to show that:
A) $\frac { 20 } { 15 } = 1 \frac { 1 } { 3 }$

B) $\frac { 3 } { 7 } = \frac { 9 } { 21 }$