1.

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

Answer»

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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