# Help (maths)

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#1
I know how to do simultaneous equations (easy and medium) but can someone help me on these types of ones

Attachment 958280
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4 weeks ago
#2
To solve them, you need to find a common factor (eg 10 for 2 and 5,) and multiply each equation so it has 10x in it. Then subtract one equation from the other and you will be left to work out one variable!
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4 weeks ago
#3
(Original post by jae jae)
I know how to do simultaneous equations (easy and medium) but can someone help me on these types of ones
Write out the question and answer then take a picture and put it on here
Attachment 958280
No we can't do questions for you. How far have you got.
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#4
(Original post by livlifestudying)
To solve them, you need to find a common factor (eg 10 for 2 and 5,) and multiply each equation so it has 10x in it. Then subtract one equation from the other and you will be left to work out one variable!
That makes soo much sense! But my teacher said that the number you times each equation by has to be the same
Last edited by jae jae; 4 weeks ago
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#5
(Original post by Muttley79)
No we can't do questions for you. How far have you got.
Um. I’ve actually tried doing the questions just because I haven’t added an attachment of my working out it doesn’t mean I haven’t done these questions.for your information I have a test tomorrow and I have to get revision done so I can pass this test as I’ve already mentioned, I’m finding simultaneous equations easy but these 3 questions are quite hard.. and I find it quite weird that solving at least one question for me is too much to ask for.... anyways.. for these 3 questions, Whilst trying to make x/y the same I remembered that my teacher told me that the number you multiply for each equation should be the same and that’s when I gave up because I knew I would get the wrong answer
Last edited by jae jae; 4 weeks ago
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4 weeks ago
#6
(Original post by jae jae)
Um. I’ve actually tried doing the questions just because I haven’t added an attachment of my working out it doesn’t mean I haven’t done these questions.for your information I have a test tomorrow and I have to get revision done so I can pass this test as I’ve already mentioned, I’m finding simultaneous equations easy but these 3 questions are quite hard.. and I find it quite weird that solving at least one question for me is too much to ask for.... anyways.. for these 3 questions, Whilst trying to make x/y the same I remembered that my teacher told me that the number you multiply for each equation should be the same and that’s when I gave up because I knew I would get the wrong answer
Both sides of each single equation need to be multiplied by the same, you don’t need to multiply both equations by the same.
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