Question

1)−3+x:(−1,2)=2,4 x= 2)0,1⋅x+1,43=2,2 x= 3)1/2+x:3/5=2/7 x=

Answer 1

Ответ:

1 x= - 162/25

2 x=7,7

3 x= -9/70

Пошаговое объяснение:

Answer 2

It seems like you have provided three different equations and you're looking for the value of x in each of them. Let's solve each equation step by step:

Equation 1: $-3 + \frac{x}{-1} = 2.4$

First, let's solve for x: $-3 - \frac{x}{1} = 2.4$ $-\frac{x}{1} = 2.4 + 3$ $-x = 5.4$ $x = -5.4$

Equation 2: $0.1x + 1.43 = 2.2$

Subtract 1.43 from both sides: $0.1x = 0.77$

Divide by 0.1: $x = \frac{0.77}{0.1}$ $x = 7.7$

Equation 3: $\frac{1}{2} + \frac{x}{\frac{3}{5}} = \frac{2}{7}$

First, let's find the reciprocal of $\frac{3}{5}$, which is $\frac{5}{3}$: $\frac{1}{2} + \frac{x}{\frac{5}{3}} = \frac{2}{7}$

Now, multiply both sides by $\frac{5}{3}$: $\frac{5}{3} \cdot \frac{1}{2} + x = \frac{5}{3} \cdot \frac{2}{7}$ $\frac{5}{6} + x = \frac{10}{21}$

Subtract $\frac{5}{6}$ from both sides: $x = \frac{10}{21} - \frac{5}{6}$

To subtract these fractions, we need a common denominator, which is 42: $x = \frac{20}{42} - \frac{35}{42}$ $x = -\frac{15}{42}$ $x = -\frac{5}{14}$

So, the solutions for each equation are:

1. $x = -5.4$
2. $x = 7.7$
3. $x = -\frac{5}{14}$