![nini0372](/avatars/31312.jpg)
nini0372
19.08.2020 •
Mathematics
Solve x+y+z=10 −2x−2y−z=−32 3x−2y+2z=−8 Enter your answer, in the form (x,y,z), in the boxes in simplest terms. x= y= z=
Solved
Show answers
More tips
- F Family and Home How to Properly Use a Water Level?...
- D Dating, Love, Relationships 10 Useful Tips on How to Survive a Breakup?...
- F Food and Cooking Apple Cider Vinegar: The Ultimate Health and Beauty Solution...
- C Computers and Internet Е-head: How it Simplifies Life for Users?...
- F Family and Home How to Choose the Best Diapers for Your Baby?...
- F Family and Home Parquet or laminate, which is better?...
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
- L Leisure and Entertainment How to Make a Paper Boat in Simple Steps...
- T Travel and tourism Maldives Adventures: What is the Best Season to Visit the Luxurious Beaches?...
- H Health and Medicine Kinesiology: What is it and How Does it Work?...
Answers on questions: Mathematics
- M Mathematics The number of newly reported crime cases in a county in New York State is shown in the accompanying table, where x represents the number of years since 2005, and y represents...
- E Engineering Agas-turbine cycle with two stages of compression (intercooling) and two stages of expansion (reheat) is considered. the inlet air to the first compression stage is at 300...
- M Mathematics Trsu is a rhombus. find su. rt= 5x+2. sr=2x+5...
- S Social Studies Which biome always has a layer of permafrost?...
- M Mathematics SOMEEONEE PLZZZZ I NEEDD HELP IS THIS CORRECT PLZZZZZ...
- C Computers and Technology Edhesive 1.7 code practice question 1...
Ответ:
(12, 10, -12)
x = 12
y = 10
z = -12
Step-by-step explanation:
Let's start by picking a variable to eliminate from the three equations, since "z" is at the end, let's go with "z".
Next we'll eliminate z from two of the equations by adding them together so:
(x+y+z=10) + (-2x-2y-z=-32)
you'll get: -x-y=-22
Next we'll eliminate z from the remaining equation in the same way so:
(-2x-2y-z=-32) + (3x-2y+2z=-8)
you'll get: -x-6y=-72
We now have two new equations:
-x-y=-22
-x-6y=-72
From these let's eliminate another variable, let's go with "x" and since both "x" are negative we'll multiply one of the equations by the negative sign of the other equation so we'll end up with one positive x and one negative x, which looks like this:
-x-y=-22
x+6y=72
and when we add these two equations we get:
5y=50
Finally we can solve for y:
y=10
With the known value of y we can use y to plug into the other equations and solve for the x and z variables to get x=12, y=10, z=-12
Ответ: