Rozwiąż układ równań:
a)
b)
bardzo proszę ;*
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4x = 10 /:4
x = 10/4
x = 2 2/4
x = 2 1/2
2·2 1/2+2y = 8
5+2y = 8
2y = 8-5
2y = 3 /:2
y = 3/2
y = 1 1/2
6x-2y = 2
2x-3y = -4 /·(-3)
-6x+9y = 12
7y = 14 /:7
y = 2
6x-2·2 = 2
6x-4 = 2
6x = 2+4
6x = 6 /:6
x = 1
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a)
------------------
4x = 10 /:4
x = 10/4
x = 2 2/4
x = 2 1/2
2·2 1/2+2y = 8
5+2y = 8
2y = 8-5
2y = 3 /:2
y = 3/2
y = 1 1/2
b)
6x-2y = 2
2x-3y = -4 /·(-3)
6x-2y = 2
-6x+9y = 12
------------------
7y = 14 /:7
y = 2
6x-2·2 = 2
6x-4 = 2
6x = 2+4
6x = 6 /:6
x = 1