Answer:
Step-by-step explanation:3x-y=18
y=27
Therefore 3x-(27)=18
3x=18+27..Nb when the 27 is now being added instead of subtracted.
3x=45
3x/3=45/3 Nb the 3 is now being divided instead of being multiplied.
Therefore X=15
Answer: the cost of the love seat would be $89
Step-by-step explanation:
Let cost of sofa be x
let cost of love seat be y
x + y = 267
x = 2y
2y + y = 267
3y = 267
3/3y = 267/3
y = 89
hope it helps :)
Answer:
8 + 48p
Step-by-step explanation:
Answer:
I thing u need to substitute 1/8 into x
Step-by-step explanation:
(1/8)^2
1/64
Answer:
99
Step-by-step explanation:
Through some clever algebra, we can combine our first two equations using the fact that
We have the a² and the b² in the equation 
, and we <em>almost </em>have a 2ab in the equation 
. To get that 2ab, we can simply double both sides of the first equation to get 
. From there, we'll add the first two equations together, giving us the summed equation
And since , we can equivalently say that
