Answer:
I think is 213 or 212.8
Step-by-step explanation:
Because 9 round to 10
810 rounds to 800
and if is nesesary 212.800 rounds to 213.
But I'm sure is 212.8, you choose.
a=7 b=11 c=9
-2-(9) -2-(9) = -2+9=7 b -2-9=-11 c -2-(-9)-(-2) = -2+9+2=9
x= -1/9
6+2x=5-7x
-2x. -2x
6=5-9x
-5. -5
1=-9x/-9
-1/9=x
y= 2/2x=3
ted= (0,4)