Question

-(y - 3) + (y – 4):3 = 2y – 9​

Answer 1

$\displaystyle -(y-3)+(y-4):3=2y-9\\\\-y+3+\frac{y-4}{3}=2y-9\\\\-3y+9+y-4=6y-27\\-2y+5=6y-27\\-2y-6y=-27-5\\-8y=-32\\y=4$