A- a+12
B- a-15
C- a(4+7)
2- 5(2n-4)
10n -20 does NOT equal to 10n-4
12g
11d
6b
7k
9m, 3n
4r, 14r
6.5x
5.4c
(The next page is the same)
11a-5c+3a = 14a -15c
16+2b-7b= 16-5b
4d-8-10d= -6d-8
21g-6f-8g= 13g-6f
6t+9s-10s-2t= 4t-1s
18r+7q-11r+13q= 7r+20q
12w-6+12-8= 12w-2
15d+3d-7d-d= 10d
4x^2+14x^2-1x= 211x ( 16x+196-1)
15x+2.5 = 3(15x+2.5) ( there are 3 sides to a triangle)
(3x-8)+(2x+4)+2(3x-1)