Question

-2 1/3х=7/15 -2/7х=-1/3

Answer 1

Ответ:

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Пошаговое объяснение:

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Answer 2

$- 2 \frac{1}{3} x = \frac{7}{15} \\ - \frac{7}{3} x = \frac{7}{15} \\ x = \frac{7}{15} \div ( - \frac{7}{3} ) \\ x = - \frac{7}{15} \times \frac{3}{7} \\ x = - \frac{1}{5}$

$- \frac{2}{7} x = - \frac{1}{3} \\ x = - \frac{1}{3} \div ( - \frac{2}{7} ) \\ x = \frac{1}{3 } \times \frac{7}{2} \\ x = \frac{7}{6} \\ x = 1 \frac{1}{6}$

Answer 3

To solve these two equations for the variable x, you can follow these steps. We'll solve them one at a time.

Equation 1: -2 1/3x = 7/15

First, let's convert the mixed number -2 1/3 to an improper fraction: -2 1/3 = -2 * 3/3 - 1/3 = -6/3 - 1/3 = -7/3

Now, we can rewrite the equation as: -7/3x = 7/15

To isolate x, divide both sides of the equation by -7/3 (which is the same as multiplying by -3/7): x = (7/15) / (-7/3)

Now, simplify the right side: x = (7/15) * (-3/7)

x = (-21/105)

Simplify further by dividing both the numerator and denominator by their greatest common divisor, which is 7: x = (-3/15)

x = (-1/5)

So, the solution to Equation 1 is x = -1/5.

Now, let's solve Equation 2: -2/7x = -1/3

To isolate x, divide both sides of the equation by -2/7 (which is the same as multiplying by -7/2): x = (-1/3) / (-2/7)

Now, simplify the right side: x = (-1/3) * (-7/2)

x = (7/6)

So, the solution to Equation 2 is x = 7/6.

In summary:

• Solution to Equation 1: x = -1/5
• Solution to Equation 2: x = 7/6