Answer:
1.25
Step-by-step explanation:
To solve this, we can replace the question mark with a variable. Let's go with a class x.
Our equation is now x+8.91=10.16.
All we have to do is isolate x.
We can do this simply by subtracting 8.91 from both sides.
This results in our answer of 1.25.
Hope this helps!
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