Question

Найдите с помощью схемы среди дробей другие равные между собой дроби 1-а=130/300+90/300

Answer 1

300(1-a)/300=130/300+90/300
(300-300a)/300=130/300+90/300
300-300a=130+90
300-130-90=300a
80=300a
a=80/300

Answer 2

Finding Equivalent Fractions

To find other fractions that are equal to the given fractions 1-a = 130/300 and 90/300, we can use a common denominator and simplify the fractions.

The given fractions have a common denominator of 300. Let's simplify the fractions and find other equivalent fractions:

1. 1-a = 130/300: - To simplify this fraction, we can divide both the numerator and denominator by their greatest common divisor (GCD). In this case, the GCD of 130 and 300 is 10. - Dividing both the numerator and denominator by 10, we get: - 1-a = 13/30.

2. 90/300: - To simplify this fraction, we can also divide both the numerator and denominator by their GCD. In this case, the GCD of 90 and 300 is 30. - Dividing both the numerator and denominator by 30, we get: - 90/300 = 3/10.

Therefore, the equivalent fractions for 1-a = 130/300 are 13/30 and 3/10.

Summary

The equivalent fractions for 1-a = 130/300 are 13/30 and 3/10.