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x/5y + 2x/3y = 3x/15y + 10x/15y = 13x/15y
X - 15y is an expression: neither an equation nor an inequality. There is, therefore, nothing which can be solved.
15y+14=2(5y+6) 15y+14=10y+12 15y+14-14=10y+12-14 15y=10y-2 15y-10y=10y-2-10y 5y=-2 y=-2/5
x=20 y=-3
6 to the 3rd times 4 to the 2nd