Question 7 (v)
Simplify these expressions and find their values if x = 3, a = -1, b = -2: 2a - 2b - 4 - 5 + a
2a - 2b - 4 - 5 + a = 2a + a - 2b - 4 - 5 = 3a - 2b - 9 = 3(-1) - 2(-2) - 9 [Putting a = -1, b = -2] = -3 + 4 - 9 = -8
Question 7 (i)
Simplify these expressions and find their values if x = 3, a = -1, b = -2: 3x - 5 - x + 9
Question 7 (ii)
Simplify these expression and find their values if x = 3, a = -1, b = -2: 2 - 8x + 4x + 4
Question 7 (iv)
Simplify these expressions and find their values if x = 3, a = -1, b = -2: 10 - 3b - 4 - 5b
Question 7 (iii)
Simplify these expressions and find their values if x = 3, a = -1, b = -2: 3a + 5 - 8a + 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