Question

Simplify these expressions and find their values if x = 3, a = - 1, b = - 2 :

(i) 3 x - 5 - x + 9

 (ii) 2 - 8 x + 4 x + 4 

(iii) 3a + 5 - 8a +1 

(iv) 10 - 3b - 4 - 5b 

(v) 2 a - 2b - 4 - 5 +a

Answer 1

solution of questiona