Question

-3(4x+9)=21 find x for it​

Answer 1

The solution is provided below :

It is given in the question that,

$- 3(4x + 9) = 21$

To find : The value of x

To find, the value of x, we have to first multiply and remove the brackets. On removing the brackets, the sign will get changed.

$- 12x - 27 = 21$

$- 12x = 21 + 27$

$- 12x = 48$

$x = \frac{ - 48}{12}$

$x = - 4$

Therefore, the value of x is -4

Answer 2

The value of x= -4

Explanation:

The given equation : $-3(4x+9)=21$

To solve it for x  , we first divide both sides by -3 , we get

$4x+9=-7$

Now ,  we subtract 9 from both the sides , we get

$4x=-16$

Now , we divide both sides by 4, we get

$x=-4$

Therefore , the value of x= -4

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