x - 3y = 7 but y = 2x - 4 so
x-3(2x-4)=7 which is exactly one of the answers.
Look at the system of equations below. If you were to substitute the first equation into the second, what would the result look like?
y = 2x - 4
x - 3y = 7
a).2x - 4 - 3y = 7
b).x - 3(2x - 4) = 7
c).x - 2x - 4 = 7
d).x - 7 = 2x - 4
I really need help with this question, I don't understand it. PLEASE HELP!
2 answers
thank you so soooo much, i apreciate the help (:
1 answer