3(-5x+5y)+3(-x-4y)-2(5x-5y)
Distributing the coefficients, we have:
3(-5x) + 3(5y) + 3(-x) + 3(-4y) - 2(5x) + 2(-5y)
Simplifying:
-15x + 15y - 3x - 12y - 10x + 10y
Combining like terms:
(-15x - 3x - 10x) + (15y - 12y + 10y)
-28x + 13y