Answer:
a= 18x
Step-by-step explanation:
(a+d)/2 = 10x (1)
(b +c)/2 = 8x (2)
(b+c+d)/3 = 6x (3)
From the equation 2, we have (b+c)= 8x *2 = 16x
From the equation 3, we have d= 6x*3 - (b+c)= 18x- 16x = 2x
From the equation 1, we have a= 10x*2 -d= 20x - 2x= 18x
-72x^10 would be the correct answer
8*(1/x) = 4*(1/8)
8/x = 4/8
64 = 4x
x = 16
4(x+5y)(x-3y)
I don't know what you mean by placing the factors on the grid
