Find the errors and correct the following mathematical sentence:3(x �

1.	Find the errors and correct the following mathematical sentence:3(x – 9) = 3x – 9
Answer» 3(x – 9) = 3x – 9 3(x – 9) = 3x – 9 ⇒ 3x – 3 x 9 = 3x – 9 ⇒ 3x – 27 = 3x – 9 ⇒ – 27 ≠ – 9 ∴ The given sentence is wrong. Correct sentence is 3(x – 9) = 3x – 27.

Find the errors and correct the following mathematical sentence:3(x – 9) = 3x – 9

Answer»

3(x – 9) = 3x – 9

⇒ 3x – 3 x 9 = 3x – 9

⇒ 3x – 27 = 3x – 9

⇒ – 27 ≠ – 9

∴ The given sentence is wrong.

Correct sentence is 3(x – 9) = 3x – 27.