Matematică, întrebare adresată de monamonamonamo, 9 ani în urmă

ma ajutati va rog ? dau coroana. macar un ex plsss

Anexe:

Răspunsuri la întrebare

Răspuns de mikelina
1
20+2×{32:8+4×[20+4×(800:5-36:2)]}=
20+2×{4+4×[20+4×(160-18)]}=
20+2×[4+4×(20+4×142)]=
20+2×[4+4×(20+568)]=
20+2×(4+4×588)=
20+2×(4+2352)=
20+2×2356=
20+4712=
4732
2) 150+{450:5+25:5×[975-(50:5+3)×75]}×2=
150+{90+5×[975-(10+3)×75]}×2=
150+[90+5×(975-13×75)]×2=
150+[90+5×(975-975)]×2=
150+(90+5×0)×2=
150+(90+0)×2=
150+90×2=
150+180=
330
3)288+819:9+4×[20+6×(245:5-246:6)]=
288+91+4×[20+6×(49-41)]=
288+91+4×(20+6×8)=
288+91+4×(20+48)=
288+91+4×68=
288+91+272=
379+272=
651
4)56+5×{64:8+4×[40+7×(300:5-72:2)]}=
56+5×{8+4×[40+7×(60-36)]}=
56+5×[8+4×(40+7×24)]=
56+5×[8+4×(40+168)]=
56+5×(8+4×208)=
56+5×(8+832)=
56+5×840=
56+4200=
4256
Răspuns de Melisa1231
2
20+2x{32:8+4x[20+4x(800:5-36:2)]}
20+2x{32:8+4x[20+4x(160-18)]}
20+2x[32:8+4x(20+4x142)]
20+2x[32:8+4x(20+568)]
20+2x(32:8+4x588)
20+2x(4+2352)
20+2x2356
20+4712
4732

150+{450:5+25:5x[975-(50:5+3)x75]}x2
150+{450:5+25:5x[975-(10+3)x75]}x2
150+[450:5+25:5x(975-13x75)]x2
150+[450:5+25:5x(975-975)]x2
150+(450:5+25:5x0)x2
150+(90+5x0)x2
150+(90+0)x2
150+90x2
150+180
330

288+819:9+4x[20+6x(245:5-246:6)]
288+819:9+4x[20+6x(49-41)]
288+819:9+4x(20+6x8)
288+819:9+4x(20+48)
288+819:9+4x68
288+91+272
379+272
651

56+5x{64:8+4x[40+7x(300:5-72:2)]}
56+5x{64:8+4x[40+7x(60-36)]}
56+5x[64:8+4x(40+7x24)]
56+5x[64:8+4x(40+168)]
56+5x(64:8+4x208)
56+5x(8+832)
56+5x840
56+4200
4256

nu sunt sigură că sunt bune
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