Question

1) 3/8=9/24 2) 4\5=16\25 3) 72\90=8\9 4) 42\4=6\7 Какие из данных равенств неверны Решите плиз

Answer 1

2) Т.к если в 4/5 каждое число умножить на 5, то получится 20/25 , а не 16/25 4)Т.к если в 6/7 каждое число умножить на 7 то получится 42/49 , а не 42/4

Answer 2

4) не правильно. 42\4=6\7

Answer 3

1) To solve the equation 3/8 = 9/24, we need to find a common denominator. The common denominator for 8 and 24 is 24. So, we can rewrite the equation as 3/8 = 9/24 = 3/8. Therefore, the equation is true.

2) To solve the equation 4/5 = 16/25, we can see that the denominators are already the same. So, we can compare the numerators directly. Since 4 is not equal to 16, the equation is false.

3) To solve the equation 72/90 = 8/9, we can simplify both fractions by dividing the numerator and denominator by their greatest common divisor, which is 18. Simplifying 72/90 gives us 4/5, and simplifying 8/9 gives us 8/9. Since 4/5 is not equal to 8/9, the equation is false.

4) To solve the equation 42/4 = 6/7, we can simplify both fractions. Simplifying 42/4 gives us 21/2, and simplifying 6/7 gives us 6/7. Since 21/2 is not equal to 6/7, the equation is false.

In summary, the equations that are false are: - 4/5 = 16/25 - 72/90 = 8/9 - 42/4 = 6/7

Please let me know if you have any further questions!