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:

I) 10 2)-1

3) 24. 4) 55

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Answer 2

Answer:

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

= 10+3*0

= 10

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

= 4*2-16+7

= 8-16+7

= (-1)

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

= 20+ 4*1

= 24.

4. 5(2*4-2)+4*4+9

= 5(8-2)+16+9

= 5*6+25

= 30+25

= 55.