Question

Write a two column proof (or a flow proof. Whichever one works for you).

Answer 1

Plugging into the Given Formula the value of y:

$7(6) = 8x - 14$

Multiply the left side:

$42 = 8x - 14$

Add 14 to both sides to get:

$56 = 8x$

Divide both sides by 8 and we get:

$7 = x$

Therefore, x=7 and the proof is complete