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Cat fac:100-(1×1+1×9)-90÷9=


Răspuns :

100-(1×1+1×9)-90÷9 = 100-(1+9)-90÷9 = 100-10-90÷9=100-10-10=90-10=80
100 - ( 1 × 1 + 1 × 9 ) - 90 : 9 =
100 - ( 1 + 1 × 9 ) - 90 : 9 =
100 - ( 1 + 9 ) - 90 : 9 =
100 - 10 - 90 : 9 =
100 - 10 - 10 =
90 - 10 =
80