Question

1. \\(3,489 + 8,617 = 12,106\\)

there are 12,106 books available for loan.

1. \\(1,240 - 128 - 84 = 1,028\\)

there are 1,028 reference books on the shelf.

1. \\(20,304 \div 36 = 564\\)

there are 564 patrons.

1. \\(3,489 + 8,617 + 1,240 - 564 \times 6 = 9,962\\)

there are 9,962 books left in the library.

1. \\(2 \times 3 \times 7 = 42\\)

a patron can keep the books for 42 days.

1. \\(2(9x) = 72\\)

\\(18x = 72\\)
\\(x = 4\\)

Explanation:

Problem 1

Step 1: Sumar los números

$3489 + 8617$

Step 2: Realizar la suma

$3489 + 8617 = 12106$

Step 1: Restar el primer número

$1240 - 128 = 1112$

Step 2: Restar el segundo número

$1112 - 84 = 1028$

Step 1: Dividir los números

$20304 \div 36$

Step 2: Realizar la división

$20304 \div 36 = 564$

Answer:

12106

Problem 2