sarahhans sarahhans

17-01-2017
Mathematics

contestada

4y+4=7z, 36-4y=3x
thank you so much!!

Respuesta :

doodle10 doodle10

17-01-2017

Is it supposed to say 7x rather than Z? If so then

If you make both equations = to 4y you can work out the answer so

4y =7x-4
4y = 36-3x

Then you put them equal to each other so

7x-4 = 36-3x
10x = 40
x = 4

You can then find y by doing
4y = 7x4 - 4
4y = 28-4
4y = 24
y= 6

So the answer is x = 4 and y = 6

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