Math, asked by bilalusuf93, 1 year ago

please answer my below question and find x

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Answered by snehadubey529
0

Hope this helps you!

And if this does plz mark it the branliest answer. :-)

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bilalusuf93: you just cancel y and ,z and z without changing its sign ...why
snehadubey529: We are adding equation 1 and 2 rather than subtracting them. So, there is no need change the sign. The signs will only change when we are subtracting the two equations together.
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