Question

8x + 9 (a-b) + 27x - 9 + 12
simplify the following expression & find their value when x=-2,b=-1,a=3 ​

Answer 1

Solution :-

Value of x = -2

Value of b = -1

Value of a = 3

To simplify :-

$8x + 9(a - b) + 27x - 9 + 12$

Putting the values of x, a and b

= 8 × (-2) + 9{3 - (-1)} + 27.(-2) - 9 + 12

= -16 + 9{3 + 1} + (-54) - 9 + 12

= -16 + 9.4 - 54 - 9 + 12

= -16 + 36 - 54 - 9 + 12

= -79 + 48

= -31

Hence, the answer is -31

Answer 2

8x + 9(a - b) + 27x - 9 + 12

• x = - 2

• b = - 1

• a = 3

_____________ [GIVEN]

We have to simply the expression and find it's value

____________________________

8x + 9(a - b) + 27x - 9 + 12

Put value of x = - 2, b = - 1 and a = 3 in above equation

=> 8(-2) + 9[3 - (-1)] + 27(-2) - 9 + 12

=> - 16 + 9(3 + 1) - 54 - 9 + 12

=> - 16 + 9(4) - 63 + 12

=> - 16 + 36 - 51

=> - 67 + 36

=> - 31

______________________________

$\huge{-\:31}$

________ [ ANSWER ]

_______________________________