Question

can anyone help ??
–x + 3 > 7.
Why must you flip the inequality symbol when you divide by a negative number? can anyone explain this ? with two examples if possible please.

Answer 1

if -x< a
then -x can take the vales a-1 , a-2,a-3 .... and so on,
that is x can take the values
-a+1,-a+2,-a+3,. .....and so on
which means
x > -a
hence when multiplying or dividing, we need to flip the sign.

Answer 2

got that ^ ? @mikaa_toxica13

Answer 3

okay thanks :) do u have another example ? i need 2

Answer 4

we can make as many examples as we want...
like 1) if 4-x > 9, then -x > 9-4
x < -5 *sign flipped*
2) -x < 10
so, x> -10

Answer 5

thank u :)

Answer 6

welcome ^_^