Question

9с-21=9с+18 помогите решить!

Answer 1

9с-21=9с+18 ; 9с-9с=18+21; 0=39;/ Уравнение не имеет решения или равно нулю

Answer 2

9c-9c=18+21
0 c=9
ravnayetsay 39

Answer 3

To solve the equation 9c - 21 = 9c + 18, we need to isolate the variable c on one side of the equation. Let's go through the steps to solve it:

Step 1: Simplify both sides of the equation by combining like terms. On the left side, we have 9c - 21, and on the right side, we have 9c + 18.

Step 2: Move all terms containing c to one side of the equation. To do this, we can subtract 9c from both sides of the equation. This will eliminate the c term on the right side.

9c - 9c - 21 = 9c - 9c + 18

Simplifying further, we get:

-21 = 18

Step 3: Evaluate the equation. Since -21 is not equal to 18, the equation has no solution. This means that there is no value of c that satisfies the equation 9c - 21 = 9c + 18.

Therefore, the equation 9c - 21 = 9c + 18 has no solution.

I hope this helps! Let me know if you have any further questions.