{2x+4y-7y=6
{10x+5y-x=2y+60
{2x-3y=6
{9x+3y=60
11x=66
x=6
9*6+3y=60
y=2
((3x^3)^5*(3x^3)^4)/(9x^6)^4=24
(3x^3)^9/(3x^3)^8=24
3x^3=24
x^3=8
x=2