CPM Homework Help : MC2 Problem 6-30

CPM Homework Banner

Home > MC2 > Chapter 6 > Lesson 6.1.3 > Problem 6-30

6-30.

Simplify each expression.

$- \frac { 4 } { 5 } + \frac { 7 } { 12 }$
Hint (a):
Find a common denominator and simplify.
More Help (a):
$\left(-\frac{4}{5}\right)\left(\frac{12}{12}\right) + \left(\frac{7}{12}\right)\left(\frac{5}{5}\right)$
Answer (a):
$-\frac{13}{60}$

$\frac { 5 } { 9 } + ( - \frac { 1 } { 4 } )$
Hint (b):
Remember that adding a negative number is essentially subtraction.
Answer (b):
$\frac{11}{36}$

$- \frac { 3 } { 7 } \cdot \frac { 11 } { 12 }$
Hint (c):
Multiply the numerators together and the denominators together.

$- 1 \frac { 2 } { 3 } \cdot \frac { 4 } { 5 }$
Hint (d):
Turning the first fraction into an improper fraction may prove to be more helpful.

© 2022 CPM Educational Program. All rights reserved.