cross multiplication method
5/2x + 2/3y = 7 & 3/x +2/y=12
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Answer:
5/2x+ 2/3y =7
15y/6xy +6x/6xy =7(make the denominator same)
15y+6x/6xy =7
by cross multiplication,
15y+6x = 42 xy
solve the remaining....
3/x + 2/y =12
3y/xy +2x/xy =12 (make the denominator same)
3y+2x/ xy =12
by cross multiplication
3x+ 2x =12xy
solve the remaining
duhari218:
sorry for being late
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