We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
0
465
1
avatar

3 1/2 - 2 2/3 =

 Mar 29, 2015

Best Answer 

 #1
avatar+22188 
+5

3 1/2 - 2 2/3 = ?

$$3 \frac12 - 2 \frac23 \\\\
=3 +\frac12 - 2 -\frac23 \\\\
=3-2 +\frac12-\frac23 \\\\
=1+\frac12-\frac23 \\\\
=1\cdot \frac22 \cdot \frac33 +\frac12\cdot\frac33- \frac23\cdot \frac22\\\\
=\frac{1\cdot 2 \cdot 3+ 1\cdot 3 - 2 \cdot 2}{2\cdot 3}\\\\
=\frac{6+3-4}{6}\\\\
=\frac{5}{6}$$

or

$$3 \frac12 - 2 \frac23 \\\\
=\frac{3\cdot2+1} {2}-\frac{2\cdot 3+2}{3}\\\\
=\frac{7} {2}-\frac{8}{3}\\\\
=\frac{3\cdot 7-2\cdot 8}{2\cdot 3}\\\\
=\frac{21-16}{6}\\\\
=\frac{5}{6}$$

.
 Mar 30, 2015
 #1
avatar+22188 
+5
Best Answer

3 1/2 - 2 2/3 = ?

$$3 \frac12 - 2 \frac23 \\\\
=3 +\frac12 - 2 -\frac23 \\\\
=3-2 +\frac12-\frac23 \\\\
=1+\frac12-\frac23 \\\\
=1\cdot \frac22 \cdot \frac33 +\frac12\cdot\frac33- \frac23\cdot \frac22\\\\
=\frac{1\cdot 2 \cdot 3+ 1\cdot 3 - 2 \cdot 2}{2\cdot 3}\\\\
=\frac{6+3-4}{6}\\\\
=\frac{5}{6}$$

or

$$3 \frac12 - 2 \frac23 \\\\
=\frac{3\cdot2+1} {2}-\frac{2\cdot 3+2}{3}\\\\
=\frac{7} {2}-\frac{8}{3}\\\\
=\frac{3\cdot 7-2\cdot 8}{2\cdot 3}\\\\
=\frac{21-16}{6}\\\\
=\frac{5}{6}$$

heureka Mar 30, 2015

7 Online Users

avatar
avatar
avatar