Question

Is 4×+3=-9-3(×+9);×=-7

Answer 1

x = -5
`(4)/(7)`

Explanation:

All we need to do is to find the value of x

4×+3=-9-3(×+9)

First we will open-up the bracket, to do that -3 will be use to multiply all the values in the bracket

4x + 3 = -9 -3x - 27

Then we will now collect like term, all x variables will be on the left-hand side and all constant will be on the right-hand side

To do this, we will add 3x to both-side of the equation and then subtract 3 from both-side of the equation

4x +3 +3x = -9 -3x + 3x - 27

7x + 3 = -9-27

7x + 3 - 3 = -9-27-3

7x =-39

Divide both-side of the equation by 7

7x/7 = -39/7

(On the left-hand side of the equation, 7 at the numerator will cancel-out 7 at the denominator leaving us with just x and on the right-hand side of the equation -39 will be divided by 7

x = -5
`(4)/(7)`

Answer 2

`x=(-39)/(7)`

Explanation:

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

Distributing 3 over (x+9)

4x+3=-9-3x-27

Adding 3x in both sides and subtracting 3 from both sides

4x+3+3x-3=-9-3x-27+3x-3

4x+3x=-9-27-3

7x=-39

Dividing both sides by 7 we get

`(7x)/(7)=(-39)/(7)`

`x=(-39)/(7)`