Question

Can someone help me with this????

Answer 1

x - 5y - z = 14

(-x) (-x) (subtracting x from both sides)

-5y - z = 14 - x

(+5y) (+5y) (adding 5y to both sides)

-z = 14 - x + 5y

(-z = 14 - x + 5y) * (-1) (multiplying both sides by -1 to make z positive)

z = -14 + x - 5y (Answer :))