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Doss [256]
3 years ago
7

(3/7)*(1/10)-(3/7)*2/5+3/7*1

Mathematics
1 answer:
Lelu [443]3 years ago
6 0

Answer:

 \frac{- 39}{70}

Step-by-step explanation:

{\frac{3}{7} x \frac{1}{10}\\} - { \frac{3}{7} }x \frac{2}{5} + \frac{3}{7} x 1

We follow the BODMAS rule

=  \frac{3}{70} -  \frac{3}{7} x \frac{2}{5} + \frac{3}{7} x 1

=   \frac{3}{70} - \frac{3}{7\\} x \frac{2}{5} + \frac{3}{7} x 1

=   \frac{3}{70} - \frac{3}{7\\} x \frac{2}{5} + \frac{3}{7}

=  \frac{3}{70} - \frac{6}{35} + \frac{3}{7}

=  \frac{3}{70} - \frac{6}{35} + \frac{3*5}{7*5}        LCM= 35

=  \frac{3}{70} - \frac{6 + 15}{35}

=   \frac{3}{70} - \frac{21}{35}

=  \frac{3}{70} - \frac{21*2}{35*2}             LCM= 70

=   \frac{3 - 42}{70}

=   \frac{- 39}{70}

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