Rozwiąż układy równań metodą podstawiania .
3m + n = 9
2m - 5n = -11
4a - 2 = b
3a + 7b = 1,5
5x = 4 - 2y
4x + y = 3
6x - 3y = 9
x + 5y = 9,5
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3m + n = 9
2m - 5n = -11
n=9-3m
2m-5(9-3m)=-11
n=9-3m
2m-45+15m=-11
n=9-3m
17m=34/17
n=9-3m
m=2
n=9-3*2
m=2
n=3
m=2
4a - 2 = b
3a + 7b = 1,5
4a-2=b
3a+7*(4a-2)=1,5
4a-2=b
3a+28a-14=1,5
4a-2=b
31a=15,5/31
4a-2=b
a=1/2
4*1/2-2=b
a=1/2
b=0
a=1/2
5x = 4 - 2y
4x + y = 3
5x+2y=4
y=3-4x
5x+2(3-4x)=4
y=3-4x
5x+6-8x=4
y=3-4x
-3x=-2/-3
y=3-4x
x=2/3
y=3-4*2/3
x=2/3
y=3-8/3
x=2/3
y=1/3
6x - 3y = 9
x + 5y = 9,5
6x-3y=9
x=9,5-5y
6(9,5-5y)-3y=9
x=9,5-5y
57-30y-3y=9
x=9,5-5y
-33y=-48/-33
x=9,5-5y
y=16/11
x=9,5-5*16/11
y=16/11
x=9 1/2-80/11
y=16/11
x=19/2-80/11
y=16/11
x=209/22-160/22
y=16/11
x=49/22