Thinking Summary · Step 1
Mastered[object Object]
[Discovery] A balance has 91 on the LEFT and 89 on the RIGHT. Add weight to the lighter pan until both pans match.
Step 1
Active Step[Discovery] A balance has 91 on the LEFT and 89 on the RIGHT. Add weight to the lighter pan until both pans match.
Balance Scale
Equation: Compare 91 vs 89