Algebra
posted by David on .
Hi. I am having some problems with substitution method and i just can't seem to get these right. I have
1. 2x  3y = 1 with y = x1
2. 4x + y = 6 with 5x y = 21 and finally,
3. 5x + y =3 with 3x 8y = 24

2 x  3(x1) = 1
2 x  3 x + 3 = 1
x = 4
x = 4
y = x1 = 3
etc
check
8  9 = 1 right