rozwiąż równanie 7[x-(x-3)]=9x
7[x-(x-3)]=9x
7[x - x + 3] = 9x
7 * 3 = 9x
21 = 9x
x = 21 : 9
x = 21/9
x = 7/3
x = 2 i 1/3
7x-7x-21=9x
-9x=21;(-9)
x=2,3
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7[x-(x-3)]=9x
7[x - x + 3] = 9x
7 * 3 = 9x
21 = 9x
x = 21 : 9
x = 21/9
x = 7/3
x = 2 i 1/3
7[x-(x-3)]=9x
7x-7x-21=9x
-9x=21;(-9)
x=2,3