Question

Question 4
Simplify the following algebraic expression and find the value when x = 3, a = –1 and 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 1

Step-by-step explanation:

(i) 3(3)-5-3+9=10

(ii) 2-8(3)+4(3)+4= -6

(iii) 3(-1)+5-8(-1)+1= 11

(iv) 10-3(-2)-4-5(-2)= 22

(v) 2(-1)-2(-2)-4-5-1= -8