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25.11.2019 •
Mathematics
Prove: if a+c=b+c, then a=b.
statement 1: a+c=b+c
statement 2: a+c+(-c)=b+c+(-c)
statement 3: a+[c+(-c)]=b+[c(-c)]
statement 4: a+0=b+0
statement 5: a=b.
what is the reason for statement 2?
a. property of opposites
b. associative property of addition
c. addition property of equality
d. identify property of addition
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Ответ:
Statement 2: a+c+(-c)=b+c+(-c)
Statement 3: a+[c+(-c)]=b+[c(-c)]
Statement 4: a+0=b+0
Statement 5: a=b.
What is the reason for Statement 2?
A.) Property of opposites
This property is where a number and its opposite are called additive inverses. The sum of these numbers is equal to 0.
Ответ:
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