Question

5x+3y=-11
7x-2y=19
please solve using elimination method

Answer 1

multiply first by 2 and second by 3
then add the resulting equations to eliminate term with x
you will get value of y
put it in your original first equation and get value of x

Answer 2

if u need more assistance, let me know....

Answer 3

multiply the 1st with a 2--->10x+6y=-22
multiply the 2nd with a 3--->21x-6y=57
now add both parts and u'll have 31x=35
x=35/31
then replace x in the 1st or 2nd eq....5*35/31 +3y=-11..and find y

Answer 4

yes angela has done the first part for u........

Answer 5

ok so I don't understand how to solve for y?

Answer 6

and I don't understand how afraction became the answer

Answer 7

u got x = 35/31
put it in 5x + 3y = -11
5*35/31 + 3y = -11
175/31 + 3y = -11
3y = -11 - 175/31
3y = (-341-175)/31
3y = -516/31
y = -516/93

Answer 8

x=35/31..then we replace the value of x we found at one of the eq....I chose 1st...
5*35/31 +3y=-11
3y=-11-175/31
y=(-341-175)/93=-516/93

Answer 9

so you don't have to multiply both sides by the first answer?

Answer 10

noo

Answer 11

I just always get confused on what steps to take for what problems. - numbers throw me off too. Thank you both for your help.

Answer 12

MY assignment say those answers are wrong....now I am even more confused because it started making a little bit of sense

Answer 13

I don't see any mistake in the solution....

Answer 14

the answer should look like this right. (35/31,-156/93) ?

Answer 15

yea but's -516 not -156

Answer 16

ok that's my fault...hold on.

Answer 17

yea still says wrong???

Answer 18

it might be a typo error in the printing...

Answer 19

should the first answer be be a -?

Answer 20

It says the second part should be -172/31

Answer 21

so it should look like this (35/31,-172/31)

Answer 22

yes this is right, we forgot to reduce the value of y to lowest terms

-516/93 = -172/31 (divide both numerator and denominator by 3)

Answer 23

now do it and check, our working is right...

Answer 24

now u can push THE GOOD ANSWER button.... ( :))

Answer 25

??????????

Answer 26

LOL I always give you a good answer!

Answer 27

thanks !!!

Answer 28

you are welcome

Answer 29

you help me I give you medals every single time!

Answer 30

i am lucky to b appreciated

Answer 31

I am lucky for the help. Angela I gave you a medal as well.

Answer 32

Lucky u..I solve the q and ppl say thnx Harkirat....

Answer 33

yea I saw tht..( was having dinner ) thnx

Answer 34

I thank you as well both of you helped me very much. I thought you were gone.

Answer 35

Nnoononono...Wht I said wasn't 4 u Aroub :):):):)

Answer 36

hey angela don't get jealous :D

Answer 37

I'm not jealous....and I don't really care abt the medals...I just want 4 ppl to be polite and say a **thanks**

Answer 38

generally they thank all who hv contributed, and so has plshlpme !!

Answer 39

I was going to thank you, I was just responding to Harkirat. I apologize. I didn't mean to make you fell unappreciated because you are.

Answer 40

Errr......I said I wasn't talking abt Aroub.....

Answer 41

Aroub HELLO!!!!!! the words I said weren't 4 u

Answer 42

ok guys. I appreciate you both again THANK YOU BOTH FOR YOUR HELP! MUCH APPRECIATED