Răspuns :
87+2×9+64÷4-(56÷7+12×5)
87+18+16-(8+60)
105+16-68
121-68
53
A) 87+2 X 9 + 64 : 4 - ( 8 + 60 ) =
=87 + 2 X 9 + 64 :4 - 68 =
= 87+ 18 + 16 - 68 =
= 105 + 16 - 68 =
= 121 - 68 =
= 53
=87 + 2 X 9 + 64 :4 - 68 =
= 87+ 18 + 16 - 68 =
= 105 + 16 - 68 =
= 121 - 68 =
= 53