Question

6. Simplify the expressions and find the value if x is equal to 2
(1) x + 7 + 4 (x - 5)
(i) 3 (x + 2)
(iii) 6x + 5 (x-2)
(v) 4/2x-1​

Answer 1

if in all equations we cen put value of x = 2

SO,

1) x + 7 + 4 ( x - 5 )

= x + 7 + 4x - 20

= 5x - 13

= 5(2) - 13

= 10 - 13

= - 3

2) 3 ( x + 2 )

= 3x + 6

= 3(2) + 6

= 6 + 6

= 12

3) 6x + 5 ( x - 2 )

= 6x + 5x - 10

= 11x - 10

= 11(2) - 10

= 22 - 10

= 12

4) 4/2x -1

In this question, if you want answer like this

:⟹ ( 4/ 2x ) -1

= 2/x - 1

= 2 / 2 - 1

= 1 - 1

= 0

And if you want answer like this,

:⟹ 4 / (2x - 1 )

= 4 / ( 2 (2) - 1 )

= 4 / ( 4 - 1 )

= 4 / 3

I hope it helps you