Если числитель дроби уменьшить на 3, а знаменатель увеличить на 2, то получиться число 1/3. если же числитель увеличить на 1, а знаменатель уменьшить на 1, то получиться дробь, равная 3/4. найди эту дробь.
My brother Alex is a footballer and he is very fit. He usually (1)sleeps eight hours and doesn’t go to bed late . He does morning(2) exercises regularly and runs 10 km every day. Alex (3) doesn't like watching TV or playing computer games. He thinks it’s (4) better to ride a bike or walk in the park . Last year my brother (5) kept to a very strict diet of vegetables, water and fish before an important match. I hope Alex (6) make a very successful career in football because he is a real sportsman. sleep
My brother Alex is a footballer and he is very fit. He usually (1)sleeps eight hours and doesn’t go to bed late . He does morning(2) exercises regularly and runs 10 km every day. Alex (3) doesn't like watching TV or playing computer games. He thinks it’s (4) better to ride a bike or walk in the park . Last year my brother (5) kept to a very strict diet of vegetables, water and fish before an important match. I hope Alex (6) make a very successful career in football because he is a real sportsman. sleep
у=13
х=2
Пошаговое объяснение:
х-3=(1/3)y+(2/3)
x=(1/3)y+(2/3)+3
x=(1/3)y+(11/3)
((1/3)y +(11/3)+1)/(y-1)=(3/4)
(1/3)y+(14/3)=(3/4)y-(3/4)
(1/3)y-(3/4)y=-(14/3)-(3/4)
-5y=-65
y=13