Удачи ,вот я решила.Выбери пожалуйста лучшим ответом
А) 12x+37=11x+8
12x-11x=8-37
x=-29
б)8-3х=-7+3х
8+7=3х+3х
15=6х
х= 2 1/3
в)9у-14=6у+13
9у-6у=13+14
3у=27
у=9
г) 5+16у=3+14у
5-3=14у-16у
2=-2у
2у=-2
у=-1
д)-4х-9=-10х+3
-4х+10х=3+9
6х=12
х=2
е) 7-2х=3х-3
7+3=3х+2х
10=5х
х=2
438500:700=626 (ост. 300)
438500 / 700
4200 626 (ост. 300)
1850
1400
4500
4200
300
проверка 700х626+300=438200+300=438500
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1. Математическое выражение, стоящее под
знаком обыкновенной дроби.
2. Как на Руси называли дроби?
3. Кто впервые в Европе ввёл десятичные
дроби?
4. Математическое выражение, стоящее над
знаком обыкновенной дроби.
5. Формат дроби.
6. В какой стране впервые
встречаются десятичные дроби?
7. Как называется эта дробь 9/8
?
8. Формат дроби.
9. Греческий математик, который
ввёл слова «числитель» и «знаменатель» в оборот?
10. Число, состоящее из одной или
несколько частей (долей) единицы?