OG详解-OG6 数学2 Q6

The correct answer is 6. The first equation in the given system is x = 8. Substituting 8 for x in the second equation in the given system yields 8+3y = 26. Subtracting 8 from both sides of this equation yields 3y = 18. Dividing both sides of this equation by 3 yields y = 6. Therefore, the value of y is 6.