Monomials
5x +3x
8x
(2x + 5) + (3x + 7)
5x + 12
(x + 2y + 3) + (4x + 5y+ 6)
5x + 7y +9
7y2 + 4y2
11y2
(6m2 + 8m) + (-2m2 + 5m)
4m2 + 13m
(3a2 + 2a - 1) + (-5a2 + 4a +2)
-2a2 + 6a +1
-8a + 2a
-6a
(-7a + 3) + (2a - 4)
-5a -1
(a + b + c) + (a - b - c)
2a
-3k + (-3k)
-6k
(9k - 10) + (-4k + 6k2)
6k2 + 5k - 10
(-6x2 + 2xy - 1) + (4xy + 1)
-6x2 + 6xy