Question

(8 supra 9) ori ( 63 supra 64) plus 8 supra 13 ori ( minus 39 supra 2
Va rog mult
Sau coroana, urgent

Answer 1

( 8 / 9 ) × ( 63 / 64 ) + 8 / 13 x ( - 39 / 2 ) =

= ( 8 / 64 ) x ( 63 / 9 ) - ( 8 / 2 ) x ( 39 / 13 ) =

= ( 1 / 8 ) x 7 - 4 x 3 =

= 7 / 8 - 12 =

= 7 / 8 - 96 / 8 =

= - 89 / 8 =

= - 11,125