CPM Homework Help : CC1 Problem 4-61

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4-61.

Compute each sum or difference.

$\frac { 2 } { 3 } + \frac { 1 } { 5 }$
Hint (a):
$\frac{10}{15}+\frac{3}{15}$
Answer (a):
$\frac{13}{15}$

$\frac{7}{8}-\frac{1}{4}$
Hint (b):
Which Giant One should you use to turn fourths into eighths?

$1 \frac { 2 } { 3 } + 3 \frac { 1 } { 4 }$
Hint (c):
$\frac{5}{3}+\frac{13}{4}$

$7-3\frac{2}{5}$
Hint (d):
How many fifths is $7$ ?

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