Question

Please solve the answer in brief​

Answer 1

$4 - {12x}^{2} y + 7xy - ( {9x}^{2} y + 5xy)$

$= 4 - {12x}^{2} y + 7xy - 9 {x}^{2} y - 5xy$

$= 12 {x}^{2} - 9 {x}^{2} y + 7xy - 5xy - 4$

$= 3 {x}^{2} y + 2xy - 4$

HOPE IT HELPS ✌

Answer 2

Answer:

3x²y+12xy-9

Step-by-step explanation:

= 4-12x²y+7xy-(9x²y+5xy-13)

= 12x²y-9x²y+7xy-5xy-4+13

= 3x²y+2xy-9