(x-87)-27=36 ; 87-(41+y)=22; (x+14)-12=75; (x+39)-43=27; 60-(x-16)=20; (60-x)-16=20
1)(x-87)-27=36
x-87-27=36
x=36+27+87
x=150
2) 87-(41+y)=22;
87-41-y=22
-y=22-87+41
-y=-24
y=24
3) (x+14)-12=75
x+14-12=75
x=75-2
x=73
4) (x+39)-43=27
x+39=27+43
x=70-39
x=31
5) 60-(x-16)=20
-x+16=-40
-x=-56
x=56
6)(60-x)-16=20
60-x=36
-x=-24
x=24