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ipn [44]
3 years ago
9

20x+x-2=4 rational equation​

Mathematics
2 answers:
laila [671]3 years ago
8 0

Answer:

x = 2/7

Step-by-step explanation:

Step 1: Write equation

20x + x - 2 = 4

Step 2: Solve for <em>x</em>

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

Step 3: Check

<em>Plug in x to verify it's a solution.</em>

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

40/7 + 2/7 - 2 = 4

42/7 - 2 = 4

6 - 2 = 4

4 = 4

vitfil [10]3 years ago
7 0

Answer:

x = 2/7

Step-by-step 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

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