72 - x = 18 * 3
72 - x = 54
x = 72 - 54
x = 18
72 - 18 = 18 * 3
54 = 54
x : 8 = 130 + 270
x : 8 = 400
x = 400 * 8
x = 3200
3200 : 8 = 130 + 270
400 = 400
Ответ:
1) 72 - x = 18 * 3
2) x : 8 = 130 + 270
x = 8 * 400
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72 - x = 18 * 3
72 - x = 54
x = 72 - 54
x = 18
72 - 18 = 18 * 3
54 = 54
x : 8 = 130 + 270
x : 8 = 400
x = 400 * 8
x = 3200
3200 : 8 = 130 + 270
400 = 400
Ответ:
1) 72 - x = 18 * 3
72 - x = 54
x = 72 - 54
x = 18
2) x : 8 = 130 + 270
x : 8 = 400
x = 8 * 400
x = 3200