Question

5*х=7+28. 18:х=81:9. а+384=412+48​

Answer 1

Ответ:

5*х=7+28

5*х=35

х=35:5

х=7

5*7=7+28

18:х=81:9

18:х=9

х=18:9

х=2

18:2=81:8

а+384=412+48

а+384=460

а=460-384

а=76

76+384=412+48

Answer 2

Let's solve each of these equations step by step:

1. 5*x = 7 + 28

To solve for x, we'll first simplify the right side of the equation:

5*x = 35

Next, divide both sides of the equation by 5 to isolate x:

x = 35/5

Therefore, x = 7.

2. 18/x = 81/9

To solve for x, we'll cross-multiply and then simplify:

18 * 9 = 81 * x

162 = 81x

Next, divide both sides of the equation by 81:

162/81 = x

2 = x

Therefore, x = 2.

3. a + 384 = 412 + 48

To solve for a, we'll simplify the right side of the equation:

a + 384 = 460

Next, subtract 384 from both sides of the equation to isolate a:

a = 460 - 384

a = 76

Therefore, a = 76.