Ответ:
1) х=-24; 2) х=-4,04;
3) х=8; 4) х=-3/15
Пошаговое объяснение:
1) 5/6х-1/4х=-6-8
7/12х=-14
х=-14:7/12=-24
2) 3х+7,5+х=1,5х-7+3,5
4х-1,5х=-3,5-7,5
2,5х=-11
х=-11:2,5
х=-4,04
3) 11/18х-5/12х=1 1/3+2/9
7/36х=1 5/9
х=1 5/9:7/36=14/9*36/7
х=8
4) 2/3*4 1/2х-2/3*3/5-5/7*7/15х-7/9=-1 32/45
3х-2/-1/3х-7/9=-1 32/45
3х-1/3х-1 8/45=-1 32/45
2 2/3х=-24/45
х=-24/45:2 2/3=-24*3:45*8
х=-3/15
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Answers & Comments
Ответ:
1) х=-24; 2) х=-4,04;
3) х=8; 4) х=-3/15
Пошаговое объяснение:
1) 5/6х-1/4х=-6-8
7/12х=-14
х=-14:7/12=-24
2) 3х+7,5+х=1,5х-7+3,5
4х-1,5х=-3,5-7,5
2,5х=-11
х=-11:2,5
х=-4,04
3) 11/18х-5/12х=1 1/3+2/9
7/36х=1 5/9
х=1 5/9:7/36=14/9*36/7
х=8
4) 2/3*4 1/2х-2/3*3/5-5/7*7/15х-7/9=-1 32/45
3х-2/-1/3х-7/9=-1 32/45
3х-1/3х-1 8/45=-1 32/45
2 2/3х=-24/45
х=-24/45:2 2/3=-24*3:45*8
х=-3/15