1. Find the value of the following when a=5, b=7 and c=2.
(a)3a-5bc
(b)4a x 5b
(c)6b-9c
(d)42c-3b+5a
(e)13bc-14ac
(f)89c-4bc
(g)24bc divided by 5a
(h) 134c+2c -7ab
2. Solve the following.
(a) p x pq
(b)15y+34y-34a
(c)2m+2n-3m+5n
(d)7r-3t+t-7r+2t-6r
(e)cdf divided by fdc
(f)ACB+ xyz
(g) bef+feb-4bfe
(h) 2a+7d-9a-7a+15d
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