Question

lgenda -----> / kreska ułamkowa

1 2/3 + 2 3/4 + 3 4/5 * (8 2/5 - 7 3/20)

Answer 1

1 2/3 + 2 3/4 + 3 4/5 * (8 2/5 - 7 3/20)=

=5/3+11/4+19/5*(42/5-143/20)=

=5/3+11/4+19/5*( 168/20-143/20)=

=5/3+11/4+19/5* 25/20=

=5/3+11/4+19/5*5/4=

=5/3+11/4+19/4=

=20/12+33/12+ 57/12=

= 53/12+57/12=

= 110/12=

=9  2/12=

=9  1/6

 

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