Question

1) 43х + 72 = 502. 2) 67 -21у =25. 3) 19у -200 =47. 4) 83 +29х =982 ​

Answer 1

1) 43х=430
Х=10
2) -21у=-42
У=2
3) 19у=247
У=13
4) 29х=899
Х=31
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Answer 2

1)502-72=430
х=430:43
х=10
2)67-25=-42
-21у=-42
у=-42:-21
у=2
3)200+47=247
19у=247
у=247:19
у=13
4)982-83=899
29х=899
х=899:29
х=31

Два мінуса дають плюс

Answer 3

To solve each of these equations, we'll isolate the variable (x or y) on one side of the equation. Here's how you can solve each of them step by step:

1. 43x + 72 = 502:

   First, subtract 72 from both sides to isolate the term with x: 43x + 72 - 72 = 502 - 72 43x = 430

   Now, divide both sides by 43 to solve for x: 43x / 43 = 430 / 43 x = 10

So, the solution to the first equation is x = 10.

2. 67 - 21y = 25:

   First, subtract 67 from both sides to isolate the term with y: 67 - 67 - 21y = 25 - 67 -21y = -42

   Now, divide both sides by -21 to solve for y: (-21y) / (-21) = (-42) / (-21) y = 2

So, the solution to the second equation is y = 2.

3. 19y - 200 = 47:

   First, add 200 to both sides to isolate the term with y: 19y - 200 + 200 = 47 + 200 19y = 247

   Now, divide both sides by 19 to solve for y: 19y / 19 = 247 / 19 y = 13

So, the solution to the third equation is y = 13.

4. 83 + 29x = 982:

   First, subtract 83 from both sides to isolate the term with x: 83 + 29x - 83 = 982 - 83 29x = 899

   Now, divide both sides by 29 to solve for x: 29x / 29 = 899 / 29 x = 31

So, the solution to the fourth equation is x = 31.