Answer:
Step-by-step explanation:
because if you add 18x to both sides of the equation and simplify, you get 0= -18. C.) because if you subtract 18x from both sides of the equation and simplify, you get.
Answer:
Call the numbers a, b, c, d. What does it say if their mean is 15? That would be that added together then divided by 4 you get 15. So the number before you divided by 4, which is the sum, was 60. If you know some algebra, the equation (a+b+c+d)/4=15 gives the sum of 60 when you multiply both sides
5/6 is always going to my equal to itself. o divide the two and see what you get
6s - 10= 2 + 3s + s
6s - 10= 2 + 4s
6s - 4s= 2 + 10
2s= 12
divide both sides by 2
s= 6
so his answer is wrong