14/x+3/y=5 21/x-8/y=-5 by substitution
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0
Answer:
X=7 y=1
Step-by-step explanation:
Answered by
2
Step-by-step explanation:
14/x=5-3/y
14/x=(5y-3)/y
14y/5y-3=x
put this value in equation 2
21×(5y-3)/14y -8/y=-5
(105y-63-112)/14y=-5
105y-175=-70y
105y+70y=175
175y=175
y=1
put y =1 in eq 1
(14+3x)=5x
14=2x
x=7
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