Hello there. I did one part of your question.
4x + 2y + z = 8
<span><span>−<span>4x</span></span>−<span>2y</span></span>+<span>8</span>
Answer:
7.2
Step-by-step explanation:
6^2+4^2=c^2
36+16=c^2
52=c^2
x=7.2
What you need to do is divide the fraction then multiply by the reciprocal of that fraction
So it’ll be 9-3x3+1
Then you multiply the numbers
9-9+1
Eliminate both 9’s, therefore the answer will be 1
