I’m not sure, but when I don’t understand something I watch a video. Try watching a video about it.
Answer:robert=120lbs,genesis=100
Step-by-step explanation:take genesis as (x) and since robert is 20 pounds heavier he would be (X+20) so:
x+(x+20) =220lbs
2x+20=220
2x=220-20
2x=200
x=100 which we took as genesis
which leaves robert's weight 100 +20 =120
6x−4−4x+8 = 6x+−4+−4x+8 and then combine like terms =6x+−4+−4x+8
=(6x+−4x)+(−4+8)
Answer: 2x+4
The answer is 0 because any number elevated to 0 is 0
