CPM Homework Help : GB8I Problem 3-23

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Home > GB8I > Chapter 3 Unit 4 > Lesson INT1: 3.1.2 > Problem 3-23

3-23.

Perform the indicated operations.

$- 7 \frac { 5 } { 6 } + ( - 7 \frac { 1 } { 4 } )$

Hint (a):
Get the fractions to have common denominators.
Step 1(a):
$-7\frac{10}{12}+-7\frac{3}{12}$
Step 2(a):
$\frac{-94}{12}+\frac{-87}{12}$
Step 3(a):
$\frac{-181}{12}$
Answer (a):
$-15\frac{1}{12}$

$- 8 \frac { 1 } { 2 } - ( 3 \frac { 1 } { 4 } )$
Hint (b):
See part (a).

$(-2\frac{3}{7})(-7)$

Answer (c):
$17$

$-2\frac{1}{8}\div\frac{1}{5}$

Answer (d):
$-10\frac{5}{8}$

Compute without a calculator

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