1)(x-3)-3(x-5) = x-3-3x+15 = -2x+12
2) 15(8x-1)-8(15x+4) = 120x-15-120x-32 = -47
3) 2y(2x-3y)-3y(5y-3x) = 4xy - 6y² - 15y² + 9xy = 13xy - 21y²
1)(x-3)-3(x-5) = x-3-3x+15 = -2x+12
2) 15(8x-1)-8(15x+4) = 120x-15-120x-32 = -47
3) 2y(2x-3y)-3y(5y-3x) = 4xy - 6y² - 15y² + 9xy = 13xy - 21y²