Ustin weighs 15 pounds less than greg weighs. half of greg's weight is 75 pounds less than justin's weight. how much does each of them weigh? a. greg weighs 200 pounds, and justin weighs 185 pounds. b. greg weighs 190 pounds, and justin weighs 175 pounds. c. greg weighs 180 pounds, and justin weighs 165 pounds. d. greg weighs 170 pounds, and justin weighs 155 pounds.
i would use elimination
to solve for one variable in either equation, you would end up with fractions, and fractions are hard to work with.
take the firs equation. to solve for y
6x -2y =3
-2y = -6x+3
y = -6x/-2 +3/-2
the last term is a fraction and then we substitute it into the other equation.
multiply the first equation by 3 and the second equation by 2
18x -6y =9
10x+6y = 8
28x = 17
we do not deal with fraction until we solve
the answer is a- equality
norma practices 350 minutes in a week
step-by-step explanation: 50 min per day x 7 days = 350 minutes in a week