Answer: Total part of pizza ate by both is [tex]\frac{19}{42}[/tex]
Step-by-step explanation:
Since we have given that
Part of pizza ate by his mom is given by
[tex]\frac{2}{7}[/tex]
Part of pizza ate by his brother is givebn by
[tex]\frac{1}{6}[/tex]
total part of pizza ate by both of them is given by
[tex]\frac{2}{7}+\frac{1}{6}\\\\=\frac{12+7}{42}\\\\=\frac{19}{42}[/tex]
Hence, total part of pizza ate by both is [tex]\frac{19}{42}[/tex]