Question

answers these questions please
this is for our genius ​

Answer 1

Answer:

1)

$\frac{1}{4} + \frac{3}{4} + 1\frac{1}{5} = \frac{1}{4} + \frac{3}{4} + \frac{6}{5} \\ \\ lcm = 20 \\ \\ = \frac{5 + 15 + 24}{20} = \frac{44}{20} = 2\frac{4}{20}$

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2)

$\frac{3}{4} - \frac{1}{10} \\ \\ lcm = 2 \times 2 \times 5 = 20 \\ \\ = \frac{15 - 2}{20} = \frac{13}{20}$

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Mutiply-

$\frac{2}{3} \times \frac{6}{55} \times \frac{33}{40 } = \frac{2}{3} \times \frac{33}{40} \times \frac{6}{55} \\ \\ = \frac{11}{20} \times \frac{3}{55} = \frac{3}{10 \times 5} = \frac{3}{50}$

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Division-

a) $67\div 9\frac{4}{7}=67\div \frac{67}{7} \\ \\=67\times \frac{7}{67}\\ \\ = 7$

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b) $\frac{3}{8}\div 2\frac{3}{16}\\ \\= \frac{3}{8}\div \frac{35}{16}\\ \\ = \frac{3}{8}\times \frac{16}{35}\\ \\ = \frac{3×2}{35}\\ \\ = \frac{6}{35}$

Answer 2

Answer:

I) 1/4+3/4+6/5=5/20+15/20+24/20= 5+15+24/20

=44/20= 22/10=11/5 or 2.2

ii)3/4-1/10=15/20-2/20=15-2/20=13/20or0.65

iii)2/3×6/55×33/40=2/55×33/20=1/5×3/10=3/50

iv) a..67÷67/7=67×7/67=7

b..3/8÷35/16=3/8×16/35=3×2/35=6/35

please mark me as the brainliest...