rozwiąz równanie i nierówność
a) 3-(x+1)=1
B) (3x-1)<3
a)3-x-1=1
-x=1+1-3
-x=-1
x=1
b)3x-1<3
3x<3+1
3x<4
x<4/3
a)
3 -(x+1) = 1
3 - x - 1 = 1
-x = 1-2
-x = -1 /:(-1)
x = 1
=====
b)
3x-1 < 3
3x < 3 + 1
3x < 4
x < 4/3
x < 1 1/3
========
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a)3-x-1=1
-x=1+1-3
-x=-1
x=1
b)3x-1<3
3x<3+1
3x<4
x<4/3
a)
3 -(x+1) = 1
3 - x - 1 = 1
-x = 1-2
-x = -1 /:(-1)
x = 1
=====
b)
3x-1 < 3
3x < 3 + 1
3x < 4
x < 4/3
x < 1 1/3
========