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[2a+3b=8],[3a-4b=-5]...

[2a+3b=8],[3a-4b=-5]

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Prove that |[a+b,a+2b,a+3b] , [a+3b,a+4b,a+5b] , [a+5b,a+6b,a+7b]|=0

(i) If 3A = 4B = 6C , find : A : B : C . (ii) If 2a = 3b and 4b = 5c , find: a : c .

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Add: 3a - 4b + 4c, 2a + 3b - 8c, a - 6b + c

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If a = 2 and b = 5, the value of the expression 2a-[3a+{4b-(2a-b)+5a}-7b] is :

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