rozwiaz uklad rownan : (3x+1)/2 + (2y-1)/7 = 6 x+y- (2x-3y)/2 = 10 bardzo prosze o pomoc :)
(3x+1)/2 + (2y-1)/7 = 6 /*14
x+y- (2x-3y)/2 = 10 /*2
7(3x + 1) + 2(2y - 1) = 84
2x + 2y - (2x - 3y) = 20
21x + 7 + 4y - 2 = 84
2x + 2y - 2x + 3y = 20
21x + 4y = 84 + 2 - 7
5y = 20
21x + 4y = 79
y = 4
21x + 16 = 79
21x = 79 - 16
21x = 63 /:21
x = 3
(3x+1) /2+(2y-1) /7=6 /*14
x+y-(2x-3y) /2=10 /*2
7(3x+1)+2(2y-1)=84
2x+2y-(2x-3y)=20
21x+7+4y-2=84
2x-2y-2x+3y=20
21x+4y=84+2-7
5y=20 /:5
21x+4y=79
y=4
21x+4*4=79
21x=79-16
21x=63 /:21
x=3
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(3x+1)/2 + (2y-1)/7 = 6 /*14
x+y- (2x-3y)/2 = 10 /*2
7(3x + 1) + 2(2y - 1) = 84
2x + 2y - (2x - 3y) = 20
21x + 7 + 4y - 2 = 84
2x + 2y - 2x + 3y = 20
21x + 4y = 84 + 2 - 7
5y = 20
21x + 4y = 79
y = 4
21x + 16 = 79
y = 4
21x = 79 - 16
y = 4
21x = 63 /:21
y = 4
x = 3
y = 4
(3x+1) /2+(2y-1) /7=6 /*14
x+y-(2x-3y) /2=10 /*2
7(3x+1)+2(2y-1)=84
2x+2y-(2x-3y)=20
21x+7+4y-2=84
2x-2y-2x+3y=20
21x+4y=84+2-7
5y=20 /:5
21x+4y=79
y=4
21x+4*4=79
21x=79-16
21x=63 /:21
x=3