Question

Write a two column proof

given 4y = 2x - 10 y=6

prove x=17
 please help me with this

Answer 1

`4y=2x-10` and
`y=6`

use the second expression to calculate the left-hand side of the first equation:

`4\cdot 6 = 2x -10\\24 = 2x -10`

Add 10 to both sides if this equation to get

`34 = 2x`

and divide both sides by 2

`17 = x`

this proves that x = 17, give the two initial equations