Math

Use back substitution to solve the system of linear equations
x-2y+z=8
y+z=5
z=2

**I tried to solve it eventho im still confused/lost.
1=3 idk ugh

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  1. well, let's put z=2 into the 2nd

    z=y + 2 = 5
    y = 3
    So now we know that z=2 and y = 3

    now into the 1st:
    x - 6 + 2 = 8
    z = 12

    So, where was your problem with this ?
    Looks very very easy.

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    posted by Reiny
  2. Thanks ...its easy for you because your good in math. IM not.

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