Firstly you have to reduce the 4 variables to a double system of equation with only 2 variables.
Let's say, first we have to eliminate Z:
Take 1st & 3rd equation & multiply each term of the 1st by (- 1). One done you add up the 1st & the 3rd & you will get:
5W - 4x + 2y = - 18
Follow the same methodology to find another equation without z. Once done you will have a system of 2 equation with 2 variable easy to solve,
At the end you will find:
w = -3
x = -2
y = -1
z = 3
Answer:
Option 4
Step-by-step explanation:
=> 
Combining like terms
=> 
=> 
Answer:
Totally Rational
Step-by-step explanation:
-16/-2 would give you 8 which is a rational number
<em><u>I hope this helps, dont hesitate to ask for any question.Mark me as brainliest is appreciated.Tq!!</u></em>
Mrs. Wang is 55 years old and her daughter is 18 years old.
Answer:
y equals 3/2 - 1/2 x.......
