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(8 x 5:10 + 6 x 6) -(10+ 3 x 3) =​

Răspuns :

( 8 × 5 : 10 + 6 × 6 ) - ( 10 + 3 × 3 ) =

( 40 : 10 + 36 ) - ( 10 + 9 ) =

( 4 + 36 ) - 19 =

40 - 19 = 21