Решите уравнение:
1) |x-4|=2;
2) |y+5|=3;
3) |3+x|=1,5;
4) |7-y|=-2;
5) |x+3|+4=9;
6) |y-3|+8=5.
1) |x-4|=2;
2) |y+5|=3;
3) |3+x|=1,5;
4) |7-y|=-2;
5) |x+3|+4=9;
6) |y-3|+8=5.
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Answers & Comments
2)|у+5|=3; у+5=3; у=-2; у+5=-3; у=-8.
3)|3+х|=15; 3+х=15; х=12; 3+х=-15; х=-18.
4)|7-у|=-2; -2<0 нет решении
5)|х+3|+4=9; |х+3|=9-4; |х+3|=5;
х+3=5; х=2; х+3=-5; х=-8.
6)|у-2|+8=5; |у-2|=5-8; |у-2|=-3;
-3<0 нет решении