If a < 0, then 0 < -a
Is there any rhyme or reason to this? :) I just plain don't get it.
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is it something like this?
if a=-1, then 0< -(-1)=1
Thanks?
Is there any rhyme or reason to this? :) I just plain don't get it.
======================================…
is it something like this?
if a=-1, then 0< -(-1)=1
Thanks?
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It is just a special case of if a -b
Multiply both sides with -1 and because you multiply with a negative flip the < sign.
Multiply both sides with -1 and because you multiply with a negative flip the < sign.
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Visualize a number line with positive and negative numbers.
a is on the left-hand side of zero if a < 0.
That means that a is a negative number.
Negative a is, therefore, a positive number.
Negative a is on the right-hand side of zero.
0 < - a
a is on the left-hand side of zero if a < 0.
That means that a is a negative number.
Negative a is, therefore, a positive number.
Negative a is on the right-hand side of zero.
0 < - a
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"If a < 0" means a is negative. The negative of a negative is a positive, so -a is positive, i.e. 0 < -a.
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If A is greater than 0 then 0 is greater than -A.
A = a positive number, -A = a negative number.
0 is always greater than a negative number.
A = a positive number, -A = a negative number.
0 is always greater than a negative number.