Question

· X · 7 = 945y : 3 = 321257 - y = 308 : 4x · 4 = 245 - 17​

Answer 1

Ответ:

1)х×7=945. 2)у:3=321. 3)257-у=308:4

х=945:7. у=321×3. 257-у=77

х=135. у=963. у=257-77

__________. __________. у=180

___________

4)х×4=245-17

х×4=228

х=228:4

х=57

__________

Answer 2

To solve this equation, we'll break it down step by step:

1. First, let's solve for x in the first equation:

   x * 7 = 945

   Divide both sides by 7 to isolate x:

   x = 945 / 7 x = 135

2. Now, let's solve for y in the second equation:

   321257 - y = 308

   Subtract 308 from both sides to isolate y:

   -y = 308 - 321257 -y = -320949

   To solve for y, multiply both sides by -1 to change the sign:

   y = 320949

3. In the third equation, we need to solve for x:

   4x * 4 = 245 - 17

   First, subtract 17 from 245:

   4x * 4 = 228

   Now, divide both sides by 4 * 4 to isolate x:

   4x = 228 / 16 4x = 14.25

   Finally, divide both sides by 4:

   x = 14.25 / 4 x = 3.5625

So, the solutions are: x = 3.5625 y = 320949