Question

Solve the system of equations: what is the y-value in the solution?

3x - 5y = -16 and 2x + 5y = 31

Answer 1

\(3x - 5y = -16\)..........................1 multiplying by 3
\(2x + 5y = 31\)............................2multiplying by -2

6x-15y=-48................1
-6x-10y=-62...............2

add equation 1 to 2
-25 y =-110

y = 4.4

if you want to find x ..
2x-5y=-16

2x-(5× 4.4)=-16
2x=6
x= 3


You are welcome

Answer 2

Thanx for replying. yuppy i got the correct answer.you're a life saver!

Answer 3

um thats not one of the multiple question answers.

Answer 4

so your answer is 31/5? correct?

Answer 5

lool. no worries

Answer 6

its a fraction

Answer 7

aha, i see but i thought you meant to say 5 not 31/5

Answer 8

your method is implement in first equation not on second one .. and i very confused about how you choosed x = 5 ? any way .. 2 mints solution = no wasting time .. thnx for sharing your ideas .

Answer 9

ya i know
sorries

Answer 10

it's ok. the answer was 3. but i see you are trying to make effort :D we all make mistakes in math.