fifthteen and four fifths equals seven and one half plus x divided by four what is x
OK, let's turn this text into maths.
15 + 4/5 = (7 1/2) + x/4
(15 4/5) - (7 1/2) = x/4
(15 - 7) + (4/5 - 1/2) = x/4
8 + (8/10 - 5/10) = x/4
8 + 3/10 = x/4
(80 + 3)/10 = x/4
83/10 = x/4
x = 4*83/10 = 166/5
x = 166/5