The best way for him to check his answer would be to simply plug in the value found for x into the equation.
4(2) - 6 = 2
8 - 6 = 2
2 = 2
I want to help, but I’m not seeing a question though.
Answer:
5/6
Step-by-step explanation:
x > 1
x = 2,3,4,5,6
( quantity of 2,3,4,5,6)/(total)
5/6
Answer:
-8r + 4
Step-by-step explanation:
13r and -21r are like terms are both like terms so you can add them up ant get -8r
Same with -16 and 20 which will give you 4
_8r + 4