Saturday

August 30, 2014

August 30, 2014

Posted by **donald** on Friday, October 7, 2011 at 8:42pm.

x+2y-z=-8

3x-y-3z=18

after I isolate x what is the 2nd equation

- math -
**Steve**, Saturday, October 8, 2011 at 12:41amdepends on how you isolate x.

isolate it from the first equation and you have 1/3 * (1-y-2z) + 2y -z = 8

1-y-2z + 6y -3z = 24

5y -5z = 23

Anyway, you end up with (x,y,z) = (15, -6, 11)

**Related Questions**

math - find the slope and y-intercept of the graph of the equation. explain each...

trig - Find all solutions of the equation: 2 cosx + sqrt2 = 0 A) x = ð/4 + 2nð ...

trig - Find all solutions of the equation: cot x sec x = 2 cot x. A) x = 2ð/3 + ...

Math - Rearrange this equation to isolate c. a=b((1/c)-(1-d))

Math - Algebra - [ (x-3)(x+1) / (3x+11) ] = 0 How would I solve this equation? I...

math - 1. unite similar terms with parenthesis. x=2 y=-3 and z=5 find the value ...

Math/Science - Rearrange the equation to isolate the r. (what is the equation to...

math - I need help with rearranging this equation to isolate c a=b((1/c)-(1/d)) ...

Math - Hi I need help with this question. Rearrange this equation to isolate a...

Math 8R - Help!!!!!!!! - The expression 2(8a to the 2nd power + a - 1) + 3(a + 3...