Addition
3x + 5x
8x
9x - 4x
5x
3a ∙ 4b
12 ab
12a : 3
4a
3(x + 4)
3x + 12
4a + 7a + 2a
13a
12a - 5a - 2a
5a
5x∙ 3x
15 x2
20x : 5
4x
5(a + 2b
5a + 10b
5x + 3y + 7x + 2y
12x + 5y
15x - 4y - 7x + 2y
8x - 2y
2a ∙4b ∙ 3c
24 abc
24ab : 6a
4b
4(2x + 3y
8x + 12y
8a + 3b + 5a + 7b + 2a
15a + 10b
13a - 5b - 8a - 2b
5a - 7b
3x ∙ 2y ∙ 5x
30 x2y
36x2y : 6x
6xy
5(2x + 3y - 2)
10x + 15y -10
4x + 7y + 3x + 5z + 8y + 6x + 2z
13x + 15y + 7z
18x - 7y - 5x + 3y - 4x - 2y
9x - 6y
4a ∙ 3b ∙ 2a ∙ 5c
120 a2bc
60a2bc : 5ab
12ac
3(2a + 4b) + 2(a + 3b)
6a + 12b + 2a + 6b
= 8a + 18b