Question

3•(х+7)+6=6940:(х-15)=8нелп​

Answer 1

Пошаговое объяснение:

з×(х+7)+6=69

3х+21+6=69

3х=69-21-6

3х=42 | 3

х=14

40:(х-15)=8

40/х-15=8

40=8(х-15)

5=х-15

-х=-15-5

-х=-20 | : (-1)

х=20

Answer 2

To solve the equation 3(x+7)+6=6940/(x-15)=8, let's break it down into two separate equations and solve them step by step.

Equation 1: 3(x+7)+6=6940 Equation 2: 6940/(x-15)=8

Let's solve Equation 1 first:

3(x+7) + 6 = 6940

Expand the brackets:

3x + 21 + 6 = 6940

Combine like terms:

3x + 27 = 6940

Subtract 27 from both sides:

3x = 6913

Divide both sides by 3:

x = 6913/3

x ≈ 2304.33

Now let's solve Equation 2:

6940/(x-15) = 8

Multiply both sides by (x-15):

6940 = 8(x-15)

Distribute 8 on the right side:

6940 = 8x - 120

Add 120 to both sides:

6940 + 120 = 8x

7060 = 8x

Divide both sides by 8:

x = 7060/8

x = 882.5

So, the solution to the given equation is x ≈ 2304.33 and x = 882.5.