Question

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15. Form equation for the following statements:
(a) Half of a number is 18
(b) The sum of twice a number and 5 is 17
(c) A number added to half of itself is 9​

Answer 1

Answer:

(a) x=36

(b)$2x+5=17$

(c) $3x=18$

Step-by-step explanation:

(a)

   Let us consider the number be x.

  Half of a number is 18

so. $\frac{x}{2} =18\\ \\ x=36$

(b)

    Let us consider the number be x

   The sum of twice a number and 5 is 17

       $2x+5=17$

(c)

      Let us consider the number be x.

    A number added to half of itself is 9

$x+\frac{x}{2} =9\\ \\ \frac{2x+x}{2} =9\\ \\ \frac{3x}{2} =9\\ \\ 3x=18$