Question

Х ÷ 1/2 =8 ; х × 3 5/7 =1 6/7

Answer 1

X•2=8(умножаем на обратное значения 1/2=2)
2x=8
X=4
2)15/7x=16/7(умножаем 3 на 5/7 и прибавляем x)
X=16/15(умножаем обе части на 7/15)

Answer 2

1.x=8/2
x=4

2. x= (16/7) × (7/35)
x=16/35

Answer 3

To solve the equations, let's start with the first one:

1. Х ÷ 1/2 = 8

To solve for Х (X), we can multiply both sides by the reciprocal of 1/2, which is 2.

2 * (Х ÷ 1/2) = 2 * 8

Х = 16

So, Х (X) is equal to 16.

Now, let's move on to the second equation:

2. Х × 3 5/7 = 1 6/7

To simplify the calculation, let's convert the mixed fraction 3 5/7 to an improper fraction:

3 5/7 = (7 * 3 + 5) / 7 = 26/7

Now, we can rewrite the equation as:

Х × 26/7 = 1 6/7

To solve for Х (X), we can multiply both sides by the reciprocal of 26/7, which is 7/26.

(7/26) * (Х × 26/7) = (7/26) * (1 6/7)

Х = (7/26) * (1 6/7)

To multiply a whole number with a fraction, we can convert the whole number to an improper fraction:

1 6/7 = (7 * 1 + 6) / 7 = 13/7

Now the equation becomes:

Х = (7/26) * (13/7)

Now, we can cancel out the common factors:

Х = (1/26) * 13

Х = 13/26

Finally, we can simplify the fraction:

Х = 1/2

So, Х (X) is equal to 1/2.