Question

A) (3x -5) – (2x – 2) = 1, б)х+2/7-х-2/4 =2​

Answer 1

Ответ:

a) (3x - 5) - (2x - 2)=1

3x - 5 - 2x + 2 = 1

x - 3 = 1

x = 1 + 3

x = 4

b) x + 2/7 - x - 2/4 = 2

-3/14 = 2

∅

Answer 2

Ответ:

а) x=4, б) 1/8=2

Объяснение:

а) (3x-5)-(2x-2)=1

3x-5-2x+2=1

x-3=1

x=1+3

x=4

б) x+2/7-x-2/4=2

2/7-2/4=2 (я иксы сократил поэтому их зачеркнуть надо)

6/28=2

1/8=2

Answer 3

Let's solve each equation step by step:

a) (3x - 5) - (2x - 2) = 1

First, we'll simplify the equation by removing the parentheses:

3x - 5 - 2x + 2 = 1

Next, we'll combine like terms:

(3x - 2x) + (-5 + 2) = 1

x - 3 = 1

Now, let's isolate x by moving the constant term to the other side:

x = 1 + 3

x = 4

Therefore, the solution to the equation (3x - 5) - (2x - 2) = 1 is x = 4.

b) x + 2/7 - x - 2/4 = 2

First, let's simplify the equation by combining like terms:

x - x + 2/7 - 2/4 = 2

Next, we'll find a common denominator for the fractions, which is 28:

28/28 * (2/7) - 28/28 * (2/4) = 2

4/28 - 14/28 = 2

Now, let's combine the fractions:

-10/28 = 2

To simplify the equation, we'll divide both sides by -10:

(-10/28) / (-10) = 2 / (-10)

1/28 = -1/5

The equation is inconsistent since there is no value of x that satisfies it. Therefore, there is no solution to the equation x + 2/7 - x - 2/4 = 2.