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Simplify these expressions and find their values if x = 3, a = − 1, b = − 2. (i) 3x − 5 − x + 9 (ii) 2 − 8x + 4x + 4 (iii) 3a + 5 − 8a + 1 (iv) 10 − 3b − 4 − 5b (v) 2a − 2b − 4 − 5 + a |
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Answer» Simplify
(i) 3x
(iii) 3a
(v) 2a
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