This problem can be simplified by remembering that since

, we have

. Then we have

.
Ok so I have a way you can find the answers. Go look online and use Socratic
Answer:
x=5
Step-by-step explanation:
3x+7-x+6=23
3x-x=23-6-7
3x-x=23-13
3x-x=10
2x=10
x=5
Answer:
She used 5.775 pints of white paint to paint her bedroom walls.
Step-by-step explanation:
This question can be solved using a system of equations.
I am going to say that:
x is the amount of white paint used.
y is the amount of blue paint used.
7.7 pints of blue paint and white paint to paint her bedroom walls.
This means that 
1/4 of this amount is blue paint, and the rest is white paint.
The rest is 1-(1/4) = 3/4. That is, the amount of white paint is the triple of the amount of blue paint. That is,
, or 
Replacing in the first equation:






She used 5.775 pints of white paint to paint her bedroom walls.
Answer:should be: 7u-4v/8v
Step-by-step explanation: