paralaw61772
14.11.2019 •
Mathematics
Find the mistake made in the steps to solve the equation below.
61 - 1 = -25 +9
85 - 1=9
1. addition property of equality
85 = 10 2. addition property of equality
3. division property of equality
4. simplification
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step 2 is incorrect and should be 85 = 8
the justification for step 2 is incorrect and should be the subtraction profy of equality,
the justification for step 3 is incorrect and should be the multiplication property of equality
step 3 is incorrect and should be s = 10
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