Asked by C
In an equation does the inequality sign change when both sides are multiplied or divided by a negative number? Why or why not?
Answers
Answered by
FredR
First off, the word equation implies both sides of the expression are equal.
a > b implies a - b > 0
If c is < 0 then
c(a - b) < 0 or
ca - cb < 0 or
ca < cb
a > b implies a - b > 0
If c is < 0 then
c(a - b) < 0 or
ca - cb < 0 or
ca < cb
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