Question

If 9 times a certain number is subtracted from 70, the result is the same as when 7 is
subtracted from twice the number. What is the number?​

Answer 1

Answer:

LET NO. BE X

70-9X=2X-7

70+7=3X+9X

77=11X

X=7

Answer 2

Answer:

The number is 7 .

Step-by-step explanation:

Let the number is x .

9 times a certain number subtracted from 70

= 70 - 9x

7 is subtracted from twice the number = 2x - 7

According to the question,

70 - 9x = 2x - 7

=> 70 + 7 = 2x + 9x

=> 77 = 11x

=> 11x = 77

$= > x = \frac{77}{11} \\ = > x = 7$