Question

Solve the equation. Check your answer. 4y+5+-31

Answer 1

4y+5-31=0?

Answer 2

4y+5-31=0
4y-26=0
4y=26
y=13/2
y=6.5

Answer 3

how do you check your answer though?

Answer 4

Plug what you got for y back into the original equation...

Answer 5

and y=-9

Answer 6

can you show me please how to do this one

Answer 7

4(13/2)+5-31=0
2(13)+5-31=0
26-26=0

Answer 8

ok put the value of y=13/2 in the equation
So now the equation becomes 4*(13/2)+5-31

(4*13)/2=52/2=26

Now
26+5-31=0
31-31=0
0=0
which is LHS=RHS=0

Answer 9

so y=-9 and that is how you check your answer????

Answer 10

y is not =-9... y=13/2 When you plug it back into the equation you should get 0

Answer 11

because it's equal to 0.

Answer 12

y is not equal to -9 the value of y is 13/2

Answer 13

Ok tell me is 1= 0 right

Answer 14

I got y=-9 right on my test though i just needed to check my answer

Answer 15

y cannot be equal to -9 that is the answer

Answer 16

worng answer right answer is y=13/2

Answer 17

so what all should I put on my test then as the whole answer?? because I am so confused

Answer 18

Did you write the question down right? From your test, are you able to double check it.

Answer 19

yes i did and I dont understand a bit of it

Answer 20

According the equation which you have given my answer is the only right answer do you agree @purplec16

Answer 21

ok so y=13/2 and now can you tell me what is the answer to checking it

Answer 22

Yes I agree @ipm1988 Maybe she wrote down the question wrong... or your teacher may have given you marks for partial working can you write down your working here...

Answer 23

no that is the exact question from the test and the qustion again is Solve the equation and check your answer. 4y=5+-31

Answer 24

opps I mean 4y+5=-31

Answer 25

-_-, Well actually that's not the exact question... you had 4y+5-31 and you said solve which implies it must be 4y+5-31=0 and not 4y+5=-31...
4y=-36
y=-9

Answer 26

So to check 4(-9)+5=-31... and you should be able to solve that or plug it into your calculator...

Answer 27

sorry I had it written right on my paper i just typed it wrong
but the real question is solve the equation and check your answer 4y+5=-31

Answer 28

Well I did that above...

Answer 29

so the answer is y=-9 and to check it the answer is 4(-9)+5+-31

Answer 30

your answer -9 is correct here is how you check it but first answer can be 1=0 ?

Answer 31

no it can't

Answer 32

Why are you leaving out your equal signs... @jess.white please, be careful

Answer 33

I mean y=-9 and to check it the answer is 4(-9)+5=-31

Answer 34

@purplec16 could you answer me back

Answer 35

no i will not muahahhahaha

Answer 36

Well, you will not because your not @purplec16... but I stepped away from the computer for a bit, but yes when you solve this equation you will see that they are equal to -31=-31... and that how you know your answer is correct. :).