Answer: 62
Step-by-step explanation:
You do 112-19-31 and then it equal = 62
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:
the answer is 1
Step-by-step explanation:
So firstly, square root 9a^2 and 49: 
Next, combine like terms, and your answer will be 
, or the third option.
Answer:
I think you forgot the context or image of that.
