By using cros multiplication method X+y=7,5y+4x=30
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Answer:
x+y=7
so x= 7-y
now putting the value in the equation
5y+4(7-y)=30
5y+28-4y=30
1y=30-28
y=2 ; x=7-y =7-2 =5
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हमे बतओ कि वो ठीक या सही है या नही
अगर हा तो मार्क मी एस ब्रैंलिएस्त
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