Algebra
posted by maddie on .
To solve the system of equations, which expression could be substituted for x into the first equation?
3x5y=14
x+4y=10
a)104y
b)4y+10
c)(1/4)x+(5/2)
d)(1/4)x+(5/2)
I have another problem just like this one so if you could explain how to solve this one I can (hopefully) solve the other,thanks
Solve the second equation for x:
x + 4 y = 10 >
x = 10  4 y
ok I think I got the idea,lets try this one.
2x+7y=10
x2y=15
I'm thinking 2y15 here are the choices:
a)(1/2)x+15
b)(1/2)x15
c)2y+15
d)2y15
x2y=15 >
x = 2y + 15

to solve the system of equations, whcih expression could be substituted for x into the first equation? First  2x+7y=10; second = x2y=15