Answer:
blank = 18.2
Explanation:
17/10 = 1.7
66/|0 = 6.6
Then:
23.1 + 17/10 - x =66/10
is equivalent to:
23.1 + 1.7 - x = 6.6
24.8 - x = 6.6
24.8 - 6.6 = x
18.2 = x
Check:
23.1 + 1.7 - 18.2 = 6.6
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