Question

25x-16x-56=124 (x+14)*16=240 324:(x-15)=18

Answer 1

Ответ:

1) 9x=180

x=20

2) x+14=15

x=1

3) x-15=18

x=33

Answer 2

25x-16x-56=124

1.25x-16x=9x

9x-56=124

2.56 переносим к 124

124+56=180

9x=180|:9

X=20

(x+14)*16=240

16x+224=|:16

X=14

Answer 3

Let's solve each equation step by step:

1. 25x - 16x - 56 = 124

Combine like terms on the left side:

(25x - 16x) - 56 = 124

9x - 56 = 124

Now, add 56 to both sides:

9x = 124 + 56 9x = 180

Finally, divide both sides by 9 to isolate x:

9x / 9 = 180 / 9 x = 20

So, the solution to the first equation is x = 20.

2. (x + 14) * 16 = 240

First, divide both sides by 16:

(x + 14) * 16 / 16 = 240 / 16 x + 14 = 15

Now, subtract 14 from both sides to isolate x:

x + 14 - 14 = 15 - 14 x = 1

So, the solution to the second equation is x = 1.

3. 324 / (x - 15) = 18

First, multiply both sides by (x - 15) to isolate the denominator:

324 = 18 * (x - 15)

Now, divide both sides by 18 to solve for (x - 15):

(x - 15) = 324 / 18 (x - 15) = 18

Add 15 to both sides to find the value of x:

x - 15 + 15 = 18 + 15 x = 33

So, the solution to the third equation is x = 33.

To summarize:

1. x = 20
2. x = 1
3. x = 33