rozwiąż układ równań
a)
x=7
2y-7=13
b)
m=n
3m+2n=15
x = 7
2y = 13 + 7
2y = 20
y = 10
m = n
3n + 2n = 15
5n = 15 /:5
n = 3
m = 3
a)x=7
2y=20 /:2
y=10
3m+2m=15
5m=15 /:5
m=3
n=3
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a)
x=7
2y-7=13
x = 7
2y = 13 + 7
x = 7
2y = 20
x = 7
y = 10
b)
m=n
3m+2n=15
m = n
3n + 2n = 15
m = n
5n = 15 /:5
m = n
n = 3
m = 3
n = 3
a)x=7
2y-7=13
x=7
2y=20 /:2
x=7
y=10
b)
m=n
3m+2m=15
m=n
5m=15 /:5
m=n
m=3
n=3
m=3