3/5X + 1/3 = 5/6 factor comun denominador30
18x+10=25
18X=25-10
X=15/18=5/6
1/2Y = -1/6Y - 1/4 factor comun denominador 12
6y=-2y-3
6y+2y= -3
8y= -3
y = -3/8
4/5 X = -1/7 X + 3/4 factor comun denominador 140
112x= -20x + 105
112x+20x=105
132x=105
x=105/132= 35/44
2/3 + 1/4t = 1/3 factor comun denominador 12
8+3t=4
3t=4-8
3t= - 4
t= - 4/3
