Question

(2/5-6,6):(-1 1/4-1 1/3)= (X+1,2)=2,7-X 7/9X-5/18X=-3

Answer 1

Ответ:

Пошаговое объяснение:

1) 2\5-6.6=2\5-6 3\5=-6 1\5

-1 1\4-1 1\3=-1 3\12-1 4\12=-2 7\12

-6 1\5:(-2 7\12)=-31\5*(-12\31)=12\5=2.4

2) х+х=2.7-1.2

2х=1.5

х=1.5:2

х=0.75

3) 14\18х-5\18х=-3

9\18х=-3

х=-3*18\9

х=-6

Answer 2

Let's break down the equation step by step:

(2/5 - 6.6) : (-1 1/4 - 1 1/3) = (x + 1) / 2 = 2 - 7x

First, let's simplify the left side:

(2/5 - 6.6) = (-32/5)

(-1 1/4 - 1 1/3) = -5/4 - 4/3 = -35/12

So, the equation becomes:

-32/5 : -35/12 = (x + 1)/2 = 2 - 7x

Next, let's simplify the division on the left side:

(-32/5) ÷ (-35/12) = (32/5) × (12/35) = (32/7)

Now, the equation is:

32/7 = (x + 1)/2 = 2 - 7x

Next, let's get rid of the fractions by multiplying both sides by 7:

7 × (32/7) = 7 × (x + 1)/2 = 7 × (2 - 7x)

32 = 7(x + 1)/2 = 14 - 49x

Now, let's continue to simplify:

64 = 7(x + 1) = 28 - 98x

Expand the terms:

64 = 7x + 7 - 98x

Combine like terms:

-91x + 7 = 64

Subtract 7 from both sides:

-91x = 57

Finally, divide by -91 to solve for x:

x = -57/91

Simplify the fraction:

x = -3/5

So, the solution to the equation is x = -3/5.