Answer:
X = 175
Explanation:
-3/7x-9/35x + 1/5x=-85 [A "+" is assumed between the -(9/35) and the (1/5)x terms]
-(3/7)x-(9/35)x + (1/5)x = -85
-(3/7)*(5/5)x-(9/35)x + (1/5)*(7/7)x = -85 [Find the lowest common denominator (35), and convert the two fractions that are not expressed with 35 in their denominators.]
-(15/35)x - (9/35)x + (7/35)x=-85
-(17/35)x = -85
x = -(35/17)*(-85)
X = 175