Add the following expressions:
1.
(i) 5x+7x+(-6x) = 5x+7x-6x = (5+7-6)x = 6x
(ii) 3x/5 + 2x/3 + (-4x/5)
taking x as common
(3/5+2/3-4/5)x
(9+10-12)/15 x
7x/15
(vii) 5x-2x2-8, 8x2-7x-9, 3+7x2-2x
5x-2x2-8+8x2-7x-9+3+7x2-2x
13x2-4x-14
Similarly you can do all the question