Question

solve by substitution method: 9-(x-4)=y+7
2(x+y)=4-3y​

Answer 1

Answer:

2 - x - 6y

Step-by-step explanation:

9 - ( x - 4 ) = y+7 + 2(x+y) = 4 - 3y

9 - x + 4 = y + 7 + 2x + 2y = 4 - 3y

9 + 4 + x = 2y + y + 2x + 7 = 4 - 3y

13 + x = 3y + 2x + 7 = 4 - 3y

13 - 7 + x - 2x - 3y = 4 - 3y

6 - x - 3y = 4 - 3y

6 - 4 - x - 3y - 3y

2 - x - 6y