Question

Solve 7x - 4 = 5x + 15 for x.

11/2
19/2
19/12

Answer 1

7x - 4 = 5x + 15
Pass the numbers with letter to the left and the numbers without letter to the right, changing the signal as they change sides.
7x - 5x = 15 + 4
2x = 19

`\boxed{\boxed{x = (19)/(2) }}`

Answer 2

`x= (19)/(2)`

Explanation:

`7x - 4 = 5x + 15`

Solve the given equation for x. Our aim is to get x alone

`7x - 4 = 5x + 15`

Combine like terms by subtracting 5x from both sides

`7x-5x - 4 = 5x-5x+ 15`

`2x - 4 =15`

Now add 4 on both sides

`2x - 4 +4=15+4`

`2x=19`

Divide both sides by 2

`x= (19)/(2)`