Question

Decide whether 4 is a solution of 9x - 6 = 7x​

Answer 1

No, 4 is not a solution of
`9x - 6 = 7x`.

Here's why:-

`9x - 6 = 7x \\ ⇢ 9x - 7x = 6 \\ ⇢ 2x = 6 \\ ⇢ x = (6)/(2) \\ ⇢ x = 3`

Clearly, the value of
`x` is 3.

`{ \bf{ \underbrace{To\:verify:}}}`

`9x - 6 = 7x \\ ⇢ 9 * 3 - 6 = 7 * 3 \\ ⇢ 27 - 6 = 21 \\ ⇢ 21 = 21 \\ ⇢ L.H.S.=R. H. S`

Hence verified.

`\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{!}}}}}`