Question

How do I solve this system of linear equation using the substitution method?

15x-y=14
3x-4y=18

Answer 1

first equation... bring y to the right and 14 to the left.. its 15x-14=y

Answer 2

now put the value of y in the second equation

Answer 3

http://www.purplemath.com/modules/systlin4.htm

Answer 4

Right, which would lead me to
3x-4(15x-14)=18
3x-60x+56=18
57x=-38

Answer 5

yes....

Answer 6

-57x=-38
x=2/3
subbing into (2):
3(2/3)+4y=18
2+4y=18
y=16/4=4
solution: (2/3, 4)