x = 13
t = 1.6
Объяснение:
x - 5t = 5 | *-2
4x - 10t = 36
-2x + 10t = -10
+
2x = 26 | :2
-5t = -8 | :-5
x = 13
t = 1.6
Объяснение:
x - 5t = 5 | *-2
4x - 10t = 36
-2x + 10t = -10
+
4x - 10t = 36
2x = 26 | :2
x = 13
-5t = -8 | :-5
t = 1.6