prosze potrzebuje tego na jutro . Rozwiąż równania
a) 7x - 6 = - 6 +7
b) 1/3x + 2 = x
c) -7(2x + 1) = 4
d) 8 = 6(x - 1) - 4x
e) 2(1 - x) = 6(2x - 2 )
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a)7x - 6 = - 6 +7
7x=7
x=1
b) 1/3x + 2 = x
1/3x-x=-2
1/3x-3/3x=-2
-2/3x=-2
x=3
2(1 - x) = 6(2x - 2 )
2-2x=12x-12
-14x=-14
x=1
c) -7(2x + 1) = 4
-14x-7=4
-14x=11
x=-11/14
d) 8 = 6(x - 1) - 4x
8=6x-6-4x
2x=-14
x=-7