Question

3. Simplify the expression and find the value, if x = 4.
(i) x + 6+3 (x - 4)
(ii) 4 (x - 2) - 4x + 7
(iii) 5x +4 (x - 3)
(iv) 5 (2x - 2) + 4x + 9​

Answer 1

Answer:

1. 4+6+3(4-4)

4+6+3

= 13

2 . 4(4-2) -16+7

8 -16 +7

=15

3. 5(4) +4(4-3)

20 + 4(1)

20+4 = 24

4 . 5(2×4-2)+4×4+9

5×6+16+9

30 + 25

= 55