Question

Solve the system of equations by the substitution method.



Choose one answer.
a. (7, 2)
b. (-7, 3)
c. (6, 3)
d. no solution

Answer 1

post the system please

Answer 2

Super sorry! =P

Answer 3

first one : x = -3 + 5y
plug it into the second :

9(-3+5y) -6y = 51
-27+45y-6y = 51
39y = 78
y=2

now use the first one : x = -3 + 5y
to get : x = -3 +5*2 = -3 + 10 = 7

7,2

which means a