Question

7y=8x-14;y=6 prove x=7

Answer 1

see explanation

Explanation:

given

7y = 8x - 14

substitute y = 6 into the equation

7(6) = 8x - 14 , that is

42 = 8x - 14 ( add 14 to both sides )

42 + 14 = 8x - 14 + 14 ( simplify both sides )

56 = 8x ( divide both sides by 8 )

`(56)/(8)` =
`(8)/(8)` x , that is

7 = x

thus when y = 6 , x = 7