1) x - 100 = 700 : 5x - 100 = 140x = 240
2) y : 2 * 6 = 120y = 120 / 12y = 10
3) a + 4 * 30 = 160a + 120 = 160a = 160 - 120a = 40
4) 40 + c = 2 * 4040 + c = 80c = 80 - 40c = 40
Ответ:1) x = 2402) y = 103) a = 404) c = 40
1) x - 100 = 700 : 5
x - 100 = 140
x = 240
2) y : 2 * 6 = 120
y = 120 / 12
y = 10
3) a + 4 * 30 = 160
a + 120 = 160
a = 160 - 120
a = 40
4) 40 + c = 2 * 40
40 + c = 80
c = 80 - 40
c = 40
Ответ:
1) x = 240
2) y = 10
3) a = 40
4) c = 40