Question

8. 8x
= 3x + 7
4. x= (x +10)​

Answer 1

Answer:

$8x = 3x + 7 \\ = > 8x - 3x = 7 \\ = > 5x = 7 \\ = > x = \frac{7}{5}$

$x = x + 10 \\ x = \frac{7}{5 } + 10 \\ x = \frac{7 + 50}{5} \\ x = \frac{57}{5}$

Answer 2

when sound waves travel in a given medium and strike the surface of another medium,they can be bounced back into the first medium.this phenomenon is called as reflection