Addition and subtraction
5n + 2n + 4
7n + 4
2x x 3y
6xy
x/3 + x/5
8x/15
2/g x 3/h
6/gh
3(x+3)
3x + 9
5n + 2 + 3n - 4
8n -2
6x / 3
3x
m/2 - 2m/5
9m/10
3a/x 2c/g
6ac/7g
2(y + 5) + 4y
6y + 10
12a + 5 - 4 - 8a + 12ab
4a + 1 + 12ab
-4m x 12mn
-48m2n
5/6x - 1/3x
9x/18x = 1/2
x/2 ÷ 2/3
3x/4
3(6y - 4)
3y - 12
2x2 + y + x2 - y
3x2
-5a2 x (-a) x (-2y)
-10a3y
6/ac + 2/3
(18 + 2ac) / 3ac
10xy/3y ÷ 15x/y
10xy/45xy = 2/9
-2(5a - 7)
-10a + 14
m2 - 2mn + 7nm + 2m2 - n2
3m2 + 5mn - n2
24ab / ab
24
d/3 + 2/d2
(d3+6)/3d2
2a3b/3 x 6/ab2
18a3b/3ab2
4(a+5) + 2(a + 7)
6a + 34