Here's two. I can't think of any more.
20/10
20-(-10)
Answer:

Step-by-step explanation:




(0.1x-22)+(0.3x-54)=90
First combine like terms
0.4x - 76 = 90
Now add 76 on both sides
0.4x = 166
Divide by 0.4 on each side to isolate x
X= 415
Answer:
108
Step-by-step explanation: