Răspuns :
340 - ( 100 - 100 : 10 × 7 + 9 × 7 ) =
340 - ( 100 - 10 × 7 + 63 ) =
340 - ( 100 - 70 + 63 ) =
340 - ( 30 + 63 ) =
340 - 93 =
247
340 - ( 100 - 10 × 7 + 63 ) =
340 - ( 100 - 70 + 63 ) =
340 - ( 30 + 63 ) =
340 - 93 =
247
340-(100-100:10•7+9•7)=
340-(100-10•7+9•7)=
340-(100-70+63)=
340-93=247
340-(100-10•7+9•7)=
340-(100-70+63)=
340-93=247