Bentuk sederhana dari 7(x-y+2)-5(x-2y-1)​

Jawaban:

7(x – y + 2)-5(x – 2y – 1)

7x – 7y + 14 – 5(x – 2y – 1)

7x – 7y + 14 – 5x + 10y + 5

7x – 7y + 19 – 5x + 10y

2x – 7y + 19 + 10y

2x + 3y + 19

7 ( x – y + 2 ) – 5 ( x – 2y – 1 )

7 ( x ) – 7 ( -y ) – 7 ( 2 ) – 5 ( x ) – 5 ( -2y ) – 5 ( -1 )

7x + 7y – 14 – 5x + 10y + 5

7x – 5x + 7y + 10y – 14 + 5

2x + 17y – 9