=
a 5
1. If find the values of:
b 3
7a + 9b
(i)
7a - 9b
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Answer:
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Answer:
- 7a - 9b
= 7*5 - 9*3
= 35 - 27
= 8
2. 7a + 9b
= 7*5 + 9*3
= 35 + 27
= 62
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