Question

What is the solution for this inequality? 5x < 45

Answer 1

hi...
where is the inequality?

Answer 2

5x < 45

Answer 3

\[x <\frac{ 45 }{5 }\]

Answer 4

solve

Answer 5

divide both sides by five and you will get the equation above...then solve

Answer 6

i have no clue at all how to do any of this kind of math

Answer 7

If you had 5x=45, would you know how to solve for x?

Answer 8

x <45/5

Just divide it @mathematicshead

Answer 9

45/5=9

Answer 10

Yes
So
x>9 ans

Answer 11

thank you all very much :)

Answer 12

Just solve inequalities just like equalities, with the ONE extra rule that:

If you multiply OR divide by a NEGATIVE NUMBER, you must FLIP the direction of the inequality sign.

Answer 13

you dont need any extra rules if you simply apply the negative principle to equalities as well ...

Answer 14

since = flips to =, it may seem a bit redundant. But its worth the effort to generalize as a rule as opposed to learning different sets of rules.

Answer 15

I never thought of it that way @amistre64 ..... but good point! :)