87-(56+48х)=25
87-56-48x-25=0
6-48x=0
-48x=-6 \*-1
48x=6
x=6/48=1/8=0,125
87-(56+48:х)=25
87-56-48:х=25
31-48:х=25
48:х=31-25
48:х=6
х=48:6
х=8
ответ:8
87-(56+48х)=25
87-56-48x-25=0
6-48x=0
-48x=-6 \*-1
48x=6
x=6/48=1/8=0,125
87-(56+48:х)=25
87-56-48:х=25
31-48:х=25
48:х=31-25
48:х=6
х=48:6
х=8
ответ:8