Question

реши уравнения 85-17+х=39 67+х-14=78

Answer 1

85-17+Х=39
68+Х=85-39
68+Х=46
Х=46-68
Х=-29

Answer 2

67+Х-14=78 Х-14=78-67 Х-14=11 Х=14+11 Х=25

Answer 3

85-17+х=39
68+х=39
х=39-68
х=-29
67+х-14=78
53+х=78
х=78-53
х=25

Answer 4

-29 сделай проверку