Rozwiąż równania:
a)1/2(x-1)=4
b)-x-3=x-4
1/2x - 1/2 = 4
1/2x = 4 1/2
1/2x = 9/2 /*2
x = 9
-x -x = -4 + 3
-2x = -1 /:(-2)
x = 1/2
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a)1/2(x-1)=4
1/2x - 1/2 = 4
1/2x = 4 1/2
1/2x = 9/2 /*2
x = 9
b)-x-3=x-4
-x -x = -4 + 3
-2x = -1 /:(-2)
x = 1/2