Asked by Lucas

Solve by the system of equations by substitution.
x + 2y + z = 14
y = z + 1
x = -3z + 6
Anyone able to help me with this? I've been stuck on it all day and can't seem to solve it, it doesn't make any sense to me.
Answered by Steve
well, geez - start substituting!

y=z+1
x=-3z+6, so

(-3z+6)+2(z+1)+z=14

Now just solve for z, then you can get x and y.
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