Answer:
system of equations:

Step-by-step explanation:
I've attached an image with an explanation below, hope it helps!
Answer:
3x+9
Step-by-step explanation:
1(x+2) +1(x+3) +1(x+4)
<em>x+2+x+3+x+4</em>
<em>x+x+x+2+3+4</em>
<u><em>3x+9</em></u>
X=40
Complementary=90 degrees
50+x=90
-50 -50
X=40
The first thing you would do is simplify the inside of the parenthesis to 55/6 using PEMDAS. Next all you do is multiply that by 5 to get 275/6 or 45.833 (repeating) in decimal form.