Решите уравнения:
Іx-2| = 3,
I3х+6| = 4,
|x-3 | + |x-1| = 5,
|х+4| + |x-5| = 9,
|2х-3| + |2x+3| =6,
Ix+5| - |x-8| = 13,
Іх+4| - |x-3| = 1,
|3х-8| - |3x-2| = 6,
|x+7| = |x-5|.
Іx-2| = 3,
I3х+6| = 4,
|x-3 | + |x-1| = 5,
|х+4| + |x-5| = 9,
|2х-3| + |2x+3| =6,
Ix+5| - |x-8| = 13,
Іх+4| - |x-3| = 1,
|3х-8| - |3x-2| = 6,
|x+7| = |x-5|.
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Answers & Comments
-2х-5,2=-5,8
-2х=-5,8+5,2
-2х=-0,6
х=-0,6/-2
х=0,3
2) 1-0,5у+15,8=12,8-0,7у
16,8-0,5у=12,8-0,7у
-0,5у+0,7у=12,8-16,8
0.2у=-4
у=-4/0,2
у=-20
.
3) 3,8-1,5х+(4,5-0,8)=2,4х+3
3,8-1,5х+3,7=2,4х+3
7,5-1,5х=2,4х+3
-1,5х-2,4х=-7,5+3
-3,9х=-4,5
х= примерно 1