Question

20x+x-2=4 rational equation​

Answer 1

x = 2/7

Explanation:

Collect like terms:

20x + x = 21x ----> 21x - 2= 4

Move the constant to the right hand side and change the sign of the constant:

21x = 4 + 2

Calculate:

21x = 4 + 2 ---> 21x = 6

Divide both sides by 21:

21/21 and 6/21 = 2/7

Solution:

x = 2/7 or x= 0.285714

Answer 2

x = 2/7

Explanation:

Step 1: Write equation

20x + x - 2 = 4

Step 2: Solve for x

1. Combine like terms: 21x - 2 = 4
2. Add 2 to both sides: 21x = 6
3. Divide both sides by 21: x = 6/21
4. Simplify: x = 2/7

Step 3: Check

Plug in x to verify it's a solution.

20(2/7) + 2/7 - 2 = 4

40/7 + 2/7 - 2 = 4

42/7 - 2 = 4

6 - 2 = 4

4 = 4