Answer:
because it never changes.
a c d
.............................................
0.57
Step-by-step explanation:
2*3+4=10
5+2x2=9
4-3+2=3
4*3+2=14
20-4x3+6=14
16-30/2+11=12
24/6*5=20
15/5+2=5
2+2*9-5=15
12-3+4*2=1
12/3+3*4=16
9-6/3=7
16-3*4=4
36/4/9=1
The last one is yours
