Question

Need this in 3 mins, 30 points, will mark as Brainliest!!!! Solve:

Answer 1

Answer:

The missing number is 4

Step-by-step explanation:

Given

21 x 39 x _____ x 19 divided by 12 = 5187

Required

Fill in the gap

Let the missing number be represented with y; So, the expression becomes

$\frac{21 * 39 * y * 19 }{12} = 5187$

Multiply both sides by 12

$12 * \frac{21 * 39 * y * 19 }{12} = 5187 * 12$

$21 * 39 * y * 19 = 62244$

Rearrange the expression on the left hand side

$21 * 39 * 19 * y = 62244$

$15561 * y = 62244$

Divide both sides by 15561

$\frac{15561 * y}{15561} = \frac{62244}{15561}$

$y = \frac{62244}{15561}$

$y = 4$

Hence, the missing number is 4