Rationalise the Denominator
Question 1:
3
3
−
7
9
+
3
7
2
Question 2:
10
4
−
10
2
10
+
5
3
Question 3:
2
+
3
5
+
3
7
+
3
3
22
Question 4:
9
+
7
5
−
7
26
+
7
7
9
