Question

What is the solution of the inequality
a-1>11.

Answer 1

what happens when you add 1 to both sides?

Answer 2

2>12?

Answer 3

what happened to "a"
and -1 +1 =?

Answer 4

I think its a<12 but im not sure

Answer 5

the sign only switches if you multiply or divide by -1

Answer 6

well could u explain the entire thing cause im lost

Answer 7

we start with
a-1>11
we add 1 to both sides
a-1+1>11+1
we simplify
a>12

Answer 8

oh so i got it right except for the sign was backwards

Answer 9

direction of the sign is very important
ok if we had
-a>11
(-1)(-a)>(-1)11
a<-11
the direction of the sign only changes when multiplying by a negative number

suppose a was equal to -12
12>11
(-1)12<(-1)(11)
-12<-11

Answer 10

soo a-6>-4 would be a<2

Answer 11

wrong, you're not multiplying by a negative number so the sign wouldnt switch

Answer 12

so its a>2

Answer 13

right

Answer 14

Oky well then what would i do with an equation like -1+c>-4

Answer 15

same as you did for the previous problem

Answer 16

would it be c>-3

Answer 17

correct

Answer 18

Yahhh culd u help with some more?

Answer 19

i can try

Answer 20

1+b>3