well logically i dont think you could simplify this problem since both of your variables arent like terms... you couldnt add them because of the squared 2c. im sorry i couldnt help you
maybe check out khan academy? goodluck!
The answer for this question is -3
Answer: x= 25
Angles = 45, 60, 75
Step-by-step explanation:
(X+20) +3x+60 = 180
(X+20)+3x= 180-60= 120
X+20+3x= 120
X= 25
25 + 20=45
25*3= 75
5 less (-5) than 1/3 of number (n/3) is (=) 2 more than (2+) half of the number (n/2)
-5+n/3=2+n/2
add 5 to both sides
n/3=n/2+7
times 6 both sides
2n=3n+42
minus 2n both sides
0=n+42
minus 42 boh sides
-42=n
the number is -42
the number is 18