Question

реши уравнение; 85-(17+х)=39 ; (67+х)-14=78

Answer 1

85-17-х-39=0
29-х=0
х=29

67+х-14-78=0
х-25=0
х=25

Answer 2

85-(17+x)=39
17-x=85-39
17-x=46
x=17-46
x=-29.
(67+x)-14=78
67+x=78+14
67+x=92
x=67-92
x=-25.