Question

solved the question ​

Answer 1

Answer:

Step-by-step explanation:

Given that,

10x+(12 - x )=2 [10 (12 - x )+ x ] + 15

⇒ 10x + 12 - x = 2 [ 120 - 10x + x ] + 15

⇒ 10x - x + 12 = 2 [ 120 - 9x ] + 15

⇒ 9x + 12 = 240 - 18x + 15

⇒ 9x + 18x = 240 + 15 - 12

⇒ 27x = 243

⇒ x = 243 / 27

⇒ x = 9 is the answer.