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5x-2/2+y-3/5=2x
7(y-1)/2+x-5/3=2y
primeiro, vou eliminar os denominadores das fraçoes por meio do mmc:
5x-2/2+y-3/5=2x --- mmc(2,5)=10
5(5x-2)+2(y-3)=10.2x
25x-10+2y-6=20x
25x+2y-16=20x
7(y-1)/2+x-5/3=2y
7y-7/2+x-5/3=2y ----- mmc(2,3)=6
3(7y-7)+2(x-5)=6.2y
21y-21+2x-10=12y
2x+21y-31=12y
25x+2y-16=20x
2x+21y-31=12y ---x=12y-21y+31/2 --- x=-9y+31/2
25x+2y-16=20x
25(-9y+31/2)+2y-16=20(-9y+31/2)
-225y+775/2+2y-16= -180y+620/2 mmc(2)=2
-225y+775+4y-32= -180y+620
-221y+743= -180y+620
743-620= -180y+221y
123= 41y
123/41=y
y=3
x= -9y+31/2
x= -9(3)+31/2
x= -27+31/2
x= 4/2
x= 2
S(2,3)
verificação:
2x+21y-31=12y
2.2+21.3-31=12.3
4+63-31=36
67-31=36
36=36
7(y-1)/2+x-5/3=2y
primeiro, vou eliminar os denominadores das fraçoes por meio do mmc:
5x-2/2+y-3/5=2x --- mmc(2,5)=10
5(5x-2)+2(y-3)=10.2x
25x-10+2y-6=20x
25x+2y-16=20x
7(y-1)/2+x-5/3=2y
7y-7/2+x-5/3=2y ----- mmc(2,3)=6
3(7y-7)+2(x-5)=6.2y
21y-21+2x-10=12y
2x+21y-31=12y
25x+2y-16=20x
2x+21y-31=12y ---x=12y-21y+31/2 --- x=-9y+31/2
25x+2y-16=20x
25(-9y+31/2)+2y-16=20(-9y+31/2)
-225y+775/2+2y-16= -180y+620/2 mmc(2)=2
-225y+775+4y-32= -180y+620
-221y+743= -180y+620
743-620= -180y+221y
123= 41y
123/41=y
y=3
x= -9y+31/2
x= -9(3)+31/2
x= -27+31/2
x= 4/2
x= 2
S(2,3)
verificação:
2x+21y-31=12y
2.2+21.3-31=12.3
4+63-31=36
67-31=36
36=36
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