Answer:
x=5
Step-by-step explanation:
2x+x= 3x
3x=15
15/3=5
x=15 and x=7
2x^2+x=15
x(2x+1)=15
x=15
2x+1=15
2x=15-1
x=14/2
x=7
13 i got it right on khan
Point form: (4, 4)
x = 4, y = 4
