Question

Solve for x :
5x+8=7x-72​

Answer 1

x = 40

Explanation:

We just have to manipulate the terms, putting each term that has the variable "x" on one side of the equation like this:

5x + 8 = 7x - 72​

5x - 7x = - 72 - 8​

-2x = -80

x = -80/--2

x = 40

Answer 2

x = 40

Explanation:

Given equation:

`5x+8=7x-72`

Add 72 to both sides:

`\implies 5x+8+72=7x-72+72`

`\implies 5x+80=7x`

Subtract 5x from both sides:

`\implies 5x+80-5x=7x-5x`

`\implies 80=2x`

Divide both sides by 2:

`\implies (80)/(2)=(2x)/(2)`

`\implies 40=x`

Therefore, the solution to the given equation is x = 40.