Nine fifths is equalized to 1.8
The only answers that are possible is z=y-x y=x+z or x=y-z
My guess would be A, but I may be wrong
4x-10=2
add 10 to each side (addition property of equality)
4x-10+10=2+10
simplify
4x = 12
divide by 4 (division property of equality)
4x/4 = 12/4
simplify
x=3
The problem is simply asking as to convert the measurement from the smaller scale to the actual scale. For this, we simply multiply the factor to the smaller measurement. We do as follows:
Length = 1 1/8 x 8 = 9 ft
Hope this helps.