Question

pls answer it ...............

Answer 1

( 50+7+1/5+1/20) - ( 30+4+1/20 )
= 57.25 - 34.05
= 23.2

Answer 2

Hey dude:

$(5 \times {10}^{1} + 7 \times {10}^{0} + 2 \times {10}^{ - 1} + 5 \times {10}^{ - 2} )-(3 \times {10}^{1} + 4 \times {10}^{0} + 5 \times {10}^{ - 2} ) \\ = (5 \times 10 + 7 \times 1 + \frac{2}{10} + \frac{5}{100} )-(3 \times 10 + 4 \times 1 + \frac{5}{100} ) \\ = (50 + 7 + 0.20 + 0.05)-(30 + 4 + 0.05) \\ = (57.25)-(34.05) \\ = = > \: 23.20$

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