Solve, using cross-multiplication :
4x - 7y + 28 = 0 and 7x - 5y - 9 = 0.
plz it is urgent
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Answer:
4x - 7y + 28 = 0)*7 subtract (7x - 5y - 9)*4
-49y+20y+196+36=0
-29y=-232
y=8
& when you put the value of y in equation first you will get
x=7
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