Addition
(-6p-8)-(2p-6)
-8p-2
(7v-9)-(6v+9)
v-18
3w+7-9w
-6w+7
c+c+c
3c
3b-b-2b
2b-2b
(7x*2)*(x-4)
8x-2
(-7s+4)-(-8s+4)
s or 1s
5-a-1+c-6a+a
5a-a+c+4
a-1+4
1a+5
z-1+4
1z-5
(-4x*2)*(3x-7)
-1x-5
(-4f+9)-(8f+9)
-12f
4z-z+vz+1+1+2z
vz+5z+2
y-6y+y
2y-6y
6v-4v-4v
2v-4v
2(3x+2)+3(5x+8)
21x+26
(7v-9)-(6v-9)
v-18
2-1+4
1z-5
a-1+4
1a-5
3z+3z+4z
6z+4z
(-x+3)+(-6x-8)
-7x-5
(-3g)+(5g-5)
2g-5
4x+1-4
4x+-3
x+x-1
2x-1
(-4y-1)+(-9y-2)
13y-3