Question

Solve the inequality.

5 – 3a < –10

A.
a > 5

B.
a > –5

C.
a < 5

D.
a < –5 @ganeshie8

Answer 1

i dont get it

Answer 2

the subtraction part

Answer 3

yeah its tricky now, but weesy.... lets see :)

Answer 4

5 – 3a < –10

Answer 5

we wanto isolate 'a'

Answer 6

ok

Answer 7

since 5 is there on left side, lets kill it first :)
how ? subtract 5 both sides

Answer 8

are the choices the answers?

Answer 9

5 – 3a < –10
-5 -5

-3a < -15

Answer 10

yes @ienarancillo

Answer 11

5 is gone !
next wat ?

Answer 12

wait you divide both sides by -5?

Answer 13

nope, i had to subtract

Answer 14

ohhh

Answer 15

5-3a<-10
5<-10+3a
15<3a
5<a
a>5

Answer 16

ok so then you divide by 3 am I correct

Answer 17

Correct ! divide by -3

Answer 18

-3a < -15
/-3 /-3


a > 5

Answer 19

now a is isolated completely ! so thats ur solution

Answer 20

ok thank you so much

Answer 21

i bet you're wondering why < became > in the last step :)

Answer 22

yeah how?

Answer 23

there is a blind/dumb rule :-
whenever u multiply/divide by a NEGATIVE number, u must switch < and >

Answer 24

dont bother too much right away, u wil get hang of these after doing few more problems, trust me :)

Answer 25

ok thanks again for your help!

Answer 26

np :)