Matematică, întrebare adresată de annamariatudor0, 8 ani în urmă

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Răspunsuri la întrebare

Răspuns de jojoi54
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Răspuns:

24x36-[64:(5x x+6)+360]:4=773

864-[64:(5x x+6)+360]:4=773

[64:(5x x+6)+360]:4=864-773

[64:(5x x+6)+360]:4=91

[64:(5x x+6)+360]=91x4

64:(5x x+6)+360=364

64:(5x x+6)=364-360

64:(5x x+6)=4

(5x x+6)=64:4

5x x+6=16

5x x=16-6

5x x=10

x=10:5

x=2

385-[180-2x(50-35:x):9]=5x3+13x15+40:8

385-[180-2x(50-35:x):9]=15+195+5

385-[180-2x(50-35:x):9]=215

[180-2x(50-35:x):9]=385-215

180-2x(50-35:x):9=170

2x(50-35:x):9=180-170

2x(50-35:x):9=10

2x(50-35:x)=10x9

2x(50-35:x)=90

(50-35:x)=90:2

50-35:x=45

35:x=50-45

35:x=5

x=35:5

x=7

[210:15x(8x x+6)-164]+17x3=307

[14x(8x x+6)-164]+51=307

[14x(8x x+6)-164]=307-51

14x(8x x+6)-164=256

14x(8x x+6)=256+164

14x(8x x+6)=420

(8x x+6)=420:14

8x x+6=30

8x x=30-6

8x x=24

x=24:8

x=3

[52:13x100-5x(180x2-2xm)]:25=4

[4x100-5x(360-2xm)]:25=4

[400-5x(360-2xm)]:25=4

[400-5x(360-2xm)]=4x25

400-5x(360-2xm)=100

5x(360-2xm)=400-100

5x(360-2xm)=300

(360-2xm)=300:5

360-2xm=60

2xm=360-60

2xm=300

m=300:2

m=150

[(b+5)X5+5]X5+5=205

[(b+5)X5+5]X5=205-5

[(b+5)X5+5]X5=200

[(b+5)X5+5]=200:5

(b+5)X5+5=40

(b+5)X5=40-5

(b+5)X5=35.

(b+5)=35:5

b+5=7

b=7-5

b=2

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