Simultaneous equations

omg thank you!!!!! @Guest #3 and #4

that was really helpful of you! xoxo

Heyyyy @Omi67 And one word...wow...

thank you for those methods but i only know the first method it looks/is easier than the rest but thank you anyways!! xoxox 

Try watching this Tassy.  (Also try to repeat what he has done by yourself)

https://www.youtube.com/watch?v=XM7Q4Oj5OTc

Then try your own question.  :)

For your example I suggest that you  multiply the first one by 2

and multiply the second one by 5       

i have but then i conclude with..

x=-3.4

y=5.48

 but still ill have a go thank you Melody xxx

No, your answers are not quite right. They should both be whole integers, one positive and one negative.

3x+5y=19

4x-2y=-18

Multiply the first one by 2 and the second one by 5

6x+10y=38

20x-10y=-90 (+)

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Now you add them

26x+10y-10y=-52

26x=-52 => x=-52/26 

x=-2

Then you replace this value of x in order to find y

For example using the first equation:

3x+5y=19 => 3*(-2)+5y=19 => -6+5y=19 => 5y=25 => y=25/5

y=5

Hallo Tassy G