Answer:
65a
Step-by-step explanation:
21a*3-14a/(-7)=
63a-(14*a over negative seven)=
65a
hope this helps! i cant write fractions, so i wrote it in words fyi
Answer:
To find the measure of x you want to put 4x+x equaled to 180, because the measure of a straight line is 180, and 4x and x together make a straight line
Set up your equation:
4x+x=180
Add your like terms
5x=180
Divide by 5 to get x by itself
x=36
Hope this helps ;)