10x + 5y = 190
|
5x + 10y = 185
|
15x + 15y =
375
|
10x + 5y = 190
|
5x + 10y = 185
|
(-) (-)
(-)
|
5x – 5y = 5
|
x + y = 25
|
x – y = 1
|
2x = 26
|
10x + 5y = 190
|
5x + 10y = 185
|
15x + 15y =
375
|
10x + 5y = 190
|
5x + 10y = 185
|
(-) (-)
(-)
|
5x – 5y = 5
|
x + y = 25
|
x – y = 1
|
2x = 26
|