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Plasati paranteze astfel incat sa obtineti egalitati adevarate:
240-120+80=40
200+80:40=7
5x38-70:8-6=9
630:7-2x9x25=1800
128+49:42:6x8=184
180:300-30x9+199=205

Răspuns :

Didi12342
240 - (120+80) = 240 - 200 = 40

(200 + 80 ):40 = 280 : 40 = 7

(5x38-70) : 8- 6 =
= (190 -70) : 8 - 6 =
= 120 : 8 - 6 =
= 15 - 6 =
= 9

[630 : 7-(2x9)] x 25 =
= (90 - 18) × 25 =
= 72 × 25 =
= 1 800

128+[49:(42:6)x8] =
= 128 + (49 : 7 × 8) =
= 128 + 56 =
= 184

180:(300-30x9)+199 =
= 180: ( 300 - 270) + 199 =
= 180 : 30 + 199 =
= 6 + 199 =
= 205

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