Question

Solve by substitution method
17 2x +
-9
3x - y
3y = 5​

Answer 1

Step-by-step explanations:

2x+3x-y+3y-9=5

5x+2y-9=5

5x+2y=5+9

5x+2y=14

2y=14-5x

y=14-5x/2

5x+2y=14

5x+2[14-5x/2]=14

5x+[14-5x] =14

5x-5x+14=14

0+14=14

14=14

this input is an identy :

it is true for all values.