The number is 49, an initial do 21 / 3 to discover what 1/7 that the number is. We get 7, so we know 1/7 is 7 therefore if we execute 7 x 7 we will have actually 7/7 or one whole and also 7x7 is 49. Hope this helps

You are watching: Three sevenths of a number is 21 find the number

**invernessgangshow.net:**

The number is 49

**Step-by-step explanation:**

Let the number be x

From the question,

that x = 21× x = 21

= 21

Multiply both-side the the equation through 7

× 7 = 21 × 7

(On the left-hand side of the equation, 7 in ~ the numerator will certainly cancel-out 7 at the denominator leaving us with simply 3x)

3x = 147

Divide both-side that the equation by 3

=

(On the left-hand next of the equation 3 at the numerator will certainly cancel-out 3 in ~ the denominator, when on the right-hand side of the equation 147 will certainly be divided by 3)

x =

x=49

Therefore the number is 49

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