Question

_____ number should be multiplied by 1 1 by 2 to get 5 by 6​

Answer 1

Answer:

10/3 is the number

Step-by-step explanation:

Let x be the unknown number.

(x*1/2)+x=5 [Given]

(x/2)+x=5 [Multiplication]

x+2x=10 [Multiply both sides by 2]

3x=10 [Addition]

x=10/3 [Divide both sides by 3]

Check:

(x*1/2)+x=5 [Given]

(10/3*1/2)+10/3x?=5 [Substitution]

10/6+10/3?=5 [Multiplication]

10/6+20/6?=5 [Common Denominator]

30/6?=5 [Addition]

5=5 [Division]

QED

Thank you!