[tex] \sqrt{42 \ \frac{5}{26} } + \sqrt{ \frac{52}{30} } = [/tex]
[tex] \\ {4}{5} \frac{23}{5} + 1.3 = [/tex]
[tex] \sqrt12 + \sqrt{12 \frac{8}{6} } = [/tex]
[tex](7 \frac{7}{3} ) ^{6 } + 1.4 = [/tex]

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