@Simplify: 2q + 5q
7q
2q + 5q
10q

@Simplify: 6 - 4r
6 - 4r
-2r
2r

@Simplify: t - 5t +6
6 - 4t
2t
-6t - 6

@Simplify: 2a + 6 -a + 2
2a - a + 8
a + 8
2a - 6a + 2

@Simplify: y -2y + 4y +1
5y - 2y + 1
4y - 2y +1
y + 2y + 1

@Simplify: 2c - 4d + c
3c - 4d
c - 4d
-4d - 2c

@Simplify: 6s - 2s
4s
6s - 2s
4s

@Simplify: 3b + 2c + 3q
3q + 2c + 3b
8bcq
5bc + 3q

@Simplify: 6a + 27 - 8a + 19 + b
-2a + b + 46
14a + b + 27
-2a - b + 8

@Simplify: w + 4 - 3w - 2w
-5w + w + 4
-w + w + 4
-4w + w