Rozwiąż algebraicznie układy równań.
3x-8y=-1/*2
-6x-4y=3
6x-16y=-2
-------------
-20y=1/-20
y=-1/20
-6x-4*(-1/20)=3
-6x+1/5=3
-6x=3-1/5
-6x=2 4/5
-6x=14/5 /:-6
x=14/5*(-1/6)
x=-7/15
1/3x+1/2y=3/*6
1/6x+1/2y=2/*6
2x+3y=18
x+3y=12/*-1
-x-3y=-12
------------ +
x=6
2*6+3y=18
12+3y=18
3y=18-12
3y=6/:3
y=2
2(x-y)+3(x+y)=15
3(2x-y)-2(x-y)=3
2x-2y+3x+3y=15
6x-3y-2x+2y=3
5x+y=15
4x-y=3
---------- +
9x=18/;9
x=2
5*2+y=15
y=15-10
y=5
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
3x-8y=-1/*2
-6x-4y=3
6x-16y=-2
-6x-4y=3
-------------
-20y=1/-20
y=-1/20
-6x-4*(-1/20)=3
-6x+1/5=3
-6x=3-1/5
-6x=2 4/5
-6x=14/5 /:-6
x=14/5*(-1/6)
x=-7/15
x=-7/15
y=-1/20
1/3x+1/2y=3/*6
1/6x+1/2y=2/*6
2x+3y=18
x+3y=12/*-1
2x+3y=18
-x-3y=-12
------------ +
x=6
2*6+3y=18
12+3y=18
3y=18-12
3y=6/:3
y=2
x=6
y=2
2(x-y)+3(x+y)=15
3(2x-y)-2(x-y)=3
2x-2y+3x+3y=15
6x-3y-2x+2y=3
5x+y=15
4x-y=3
---------- +
9x=18/;9
x=2
5*2+y=15
y=15-10
y=5
x=2
y=5