Предмет: Математика, автор: djelvin

Решите уравнения.
7х + 2х =27 7х - 5x =70 x + 123 = 562

16х - 4х = 60 4x + 12x = 20 + 12 621 - x = 235

Ответы

Автор ответа: Surish
16
7х+2х=27
9х=27
х=27:9
x=3;

7x-5x=70
2x=70
x=35

x+123=562
x=562-123
x=439

16х - 4х = 60
12x=60
х=5

 4x + 12x = 20
16х=20
х=20/16
х=5/4   или х=1,25

12 621 - x = 235
х=12621-235
х=12386



































































































djelvin: и всё
djelvin: Ешо три там примера
Surish: последние 2 правильно написано
djelvin: Знаю там ешо три осталось
Surish: всё
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