Rozwiąż równania :
1/3 np. to jedna trzecia itp.
a) 1/3x - 2 = x + 2
b)1 - 6/7x = 4/7
a)
1/3x - 2 = x + 2
1/3x-x=2+2
-2/3x=4/*-3/2
x=-6
b)
1 - 6/7x = 4/7
-6/7x=4/7-1
-6/7x=-3/7/*-7/6
x=1/2
a) 1/3x - 2 = x + 2 /*3x – 6 = 3x + 6x – 3x = 6 + 6-2x = 12 /: (-2)x = - 6b)1 - 6/7x = 4/7 /*77 – 6x = 4-6x = 4 -7-6x = - 3 / (-6)x = 3/6 = 1/2
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a)
1/3x - 2 = x + 2
1/3x-x=2+2
-2/3x=4/*-3/2
x=-6
b)
1 - 6/7x = 4/7
-6/7x=4/7-1
-6/7x=-3/7/*-7/6
x=1/2
a)
1/3x - 2 = x + 2 /*3
x – 6 = 3x + 6
x – 3x = 6 + 6
-2x = 12 /: (-2)
x = - 6
b)
1 - 6/7x = 4/7 /*7
7 – 6x = 4
-6x = 4 -7
-6x = - 3 / (-6)
x = 3/6 = 1/2