Question

Сократите дробь. (Это 6 класс) а) 17*15*25/15*51*5б) 26*15*4/18*27*10в) 82*15*16/12*41*20г) 24a*5c/25c*18aд) 8*7+5*7-2*7/121Найдите x.a) 4x-7/5 = 9/15помогите пожалуйста!!

Answer 1

Ответ:

Пошаговое объяснение:

17*15*25/15*51*5=1*1*5/1*3*1=5/3

26*15*4/18*27*10=12*5*2/9*9*5=4*1*2/3*9*1=8/27

82*15*16/12*41*20=2*3*4/3*1*4=2

24a*5c/25c*18a=4/15

8*7+5*7-2*7/121 (здесь д.б.скобки?)

Чтобы найти х уравнение д.б.чему-то равно

Answer 2

a) 5\3

б)26\81

в)2

г)4\15

д)7\11

а) x=1\2

Answer 3

Simplifying Fractions

To simplify a fraction, you need to find the greatest common divisor (GCD) of the numerator and denominator and divide both by that number. Let's simplify the given fractions:

a) 17 * 15 * 25 / 15 * 51 * 5

To simplify this fraction, we can cancel out common factors between the numerator and denominator. In this case, we can cancel out the factor of 15:

17 * 25 / 51 * 5

The simplified fraction is 17 * 25 / 51 * 5.

b) 26 * 15 * 4 / 18 * 27 * 10

Similarly, we can cancel out the factor of 18:

26 * 15 * 4 / 27 * 10

The simplified fraction is 26 * 15 * 4 / 27 * 10.

c) 82 * 15 * 16 / 12 * 41 * 20

In this case, we can cancel out the factor of 12:

82 * 15 * 16 / 41 * 20

The simplified fraction is 82 * 15 * 16 / 41 * 20.

d) 24a * 5c / 25c * 18a

Here, we can cancel out the factors of 24 and 25:

a * 5c / c * 18a

The simplified fraction is a * 5c / c * 18a.

e) 8 * 7 + 5 * 7 - 2 * 7 / 121

To simplify this expression, we perform the multiplication and addition/subtraction first:

56 + 35 - 14 / 121

Then, we perform the division:

91 - 14 / 121

Finally, we perform the subtraction:

77 / 121

The simplified fraction is 77 / 121.

Solving for x

Now, let's solve the equation for x:

a) 4x - 7 / 5 = 9 / 15

To solve this equation, we can start by multiplying both sides by 5 to eliminate the fraction:

5 * (4x - 7) / 5 = 5 * (9 / 15)

Simplifying, we get:

4x - 7 = 3 / 3

Next, we can simplify the right side:

4x - 7 = 1

To isolate the variable x, we can add 7 to both sides:

4x - 7 + 7 = 1 + 7

Simplifying further:

4x = 8

Finally, we divide both sides by 4 to solve for x:

4x / 4 = 8 / 4

The solution is:

x = 2

Therefore, the value of x that satisfies the equation is x = 2.

I hope this helps! Let me know if you have any further questions.