Just look at both picture and you are going to understand
But it's not one doesn't always have to be the gcf
Y=2x-9
y=x-4
x-4=2x-9
+9 each side=
x+5=2x
-x each side=
5=x
flip for the final answer of x=5
Answer:
Then you don't change the sign.
Two like signs become a positive sign.
Two unlike signs become a negative sign.
Answer:
Step-by-step explanation:
9x + 8 = 7.5x + 17
1.5x = 9
x = 6 hours
