### Math

I’m sure some of you are waiting for this week’s math problem…well you are going to have to wait until I get an answer to last week’s problem.

**Solve for x, y, and z:**

**3y + 9 = -3x/2**

**2x – y – 3z = -17**

**6z – 8x + 4 = 32**

I’ll help you a bit:

For one of the equations you will solve for z.

For another equation you will solve for y.

In the last equation you will use substitution.

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I really just didn’t feel like doing all this math, but since Bill keeps pestering me… 😉

Rearranging formulas:

6z=28+8x

6y=-3x-18

3z=(28+8x)/2

3z=14+4x

y=(-3x+-18)/6

y=-.5x-3

Therefore:

2x-y-3z=-17

2x-(-.5x-3)-(14+4x)=-17

2.5x+.5x+3-14-4x=-17

2.5x-4x=-17-3+14

-1.5x=-6

x=4

6y=-12-18

6y=-30

y=-5

3z=14+6

3z=30

z=10

Sorry, but I was on vacation from 2 Wednesdays ago through this past Friday. Justin nailed it.

On vacation… likely excuse. C’mon Steve, you can admit you didn’t know how to do it… =P

The vacation explains a complete lack of posts from me between 8/8 and 8/17 back at my blog (Fred and Aaron filled in nicely).