the first step to solving this is to multiply both sides of the equation by 3 8 + 10y = 9y - 12 now move the variable to the left side and change its sign 8 + 10y - 9y = -12 move the constant to the right side and change its sign 10y - 9y = -12 - 8 collect the like terms for y y = -12 - 8 (it equals 1 when you subtract 10 from 9 which is the same is simply saying "y") calculate the difference on the other side of the equals sign y = -20 this means that the correct answer to your question is -20. let me know if you have any further questions :)
