Answer:
21
Explanation:
do the opposite of the equation *ex. multiplication becomes division, the number at the end goes to the beginning*
1. subtract turns to addition
* 1 + 6
= 7
2. division become multiplication
7·3
= 21
plug it in
21÷3 = 7
7-1=6
x=21
21÷3=7
7-6=1
The answer would be 21
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