Question

зведіть подібні доданки
2x+3y-5y+5x
3a+3b-a-3b
-m+7m+n-5n
4+5x+4x-9

Answer 1

2x+3y-5y+5x = (2x+5x) + (3y-5y) = 7x - 2y

3a+3b-a-3b = (3a-a) + (3b-3b) = 2a

-m+7m+n-5n = (-m+7m) + (n-5n) = 6m - 4n

4+5x+4x-9 = (5x+4x) + (4-9) = 9x - 5