Ответ:
1. -3(3х+1)=15
-9х - 3 =15
-9х=18
х= -2
2. 5(х-3)=-15
5х - 15 = -15
5х = 0
х = 0
3. -5:(х+2)=16
х + 2 = - 3.2
х = - 5.2
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Ответ:
1. -3(3х+1)=15
-9х - 3 =15
-9х=18
х= -2
2. 5(х-3)=-15
5х - 15 = -15
5х = 0
х = 0
3. -5:(х+2)=16
х + 2 = - 3.2
х = - 5.2