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Question
Simplify: `3"a"xx[8"b" ÷ 4-6{"a"-(5"a"-overline(3"b"-2"a"))} ]`
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Solution
`3"a"xx[8"b" ÷ 4-6{"a"-(5"a"-overline(3"b"-2"a"))}]`
`=3"a"xx[(8"b")/4-6{"a"-(5"a"-3"b"+2"a")}]`
= 3a × [2b − 6 {a − 7a + 3b}]
= 3a × [2b − 6 {−6a + 3b}]
= 3a × [2b + 36a − 18b]
= 3a × [36a − 16b]
= 108a2 − 48ab
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