Question

What is the equation solve it

Answer 1

12x + 9 = 4x + 7

Group likely terms

12x - 4x = 7 - 9

8x = -2

Now we need to isolate x

Therefore; Divide both side by the coefficient of x thus 8

Hence x = -1/4

Answer 2

`x = \bf -(1)/(4)`

Explanation:

We are given the following equation:

`12x + 9 = 4x + 7`

In order to solve this equation, we have to rearrange it to make
`x` the subject of the equation:

`12x + 9 = 4x + 7`

⇒
`12x + 9 - 4x = 4x + 7 - 4x` [Subtracting
`4x` from both sides]

⇒
`8x + 9 = 7`

⇒
`8x + 9 - 9 = 7 - 9` [Subtracting 9 from both sides]

⇒
`8x = -2`

⇒
`(8)/(8) x = -(2)/(8)` [Dividing both sides by 8]

⇒
`x = -(2)/(8)`

⇒
`x = \bf -(1)/(4)` [Simplifying the fraction]