Answer:
x=-4
Step-by-step explanation:
1/4x-1/8=7/8+1/2x
2x-1=7+4x
2x-4x=7+1
-2x+8
2x^2-7x-4=0
2x^2-8x+x-4=0
2x(x-4)+1(x-4)=0
(2x+1)(x-4)=0
x=-1/2, 4
7/x = 5/y
Can be changed to:
5x = 7y
So, x = (7/5)y and
y = (5/7)x
245 x 0.45 = 110.25
110.25 is your answer
hope this helps
