91Ó°ÊÓ

Q 1.49.

Page 43

Multiply$\frac{11}{3}\left(-9a\right)$.

Q. 149

Page 52

In the following exercises, simplify.

$-\frac{210a^2}{110b^2}$

Q.15

Page 21

In the following exercises, find the least common multiple of each pair of numbers using the prime factors method.

28, 40

Q. 1.5

Page 10

Find the LCM of 9 and 12 using the Prime Factors Method.

Q 1.50.

Page 43

Multiply$\frac{13}{7}\left(-14b\right)$.

Q. 150

Page 52

In the following exercises, simplify.

$-\frac{30x^2}{105y^2}$

Q 1.51.

Page 44

Divide$-\frac{7}{27}÷\left(-\frac{35}{36}\right)$.

Q. 151

Page 52

In the following exercise, perform the indicated operation.

$-\frac{3}{4}(-\frac{4}{9})$

Q 1.52.

Page 44

Divide$-\frac{5}{14}÷\left(-\frac{15}{28}\right)$.

Q. 152

Page 52

In the following exercise, perform the indicated operation.

$-\frac{3}{8}.\frac{4}{15}$