Question

ME AJUDEM GENTIH PRECISO ATÉ QUINTA AGORA



A)X/2-X/4 =1/2
B)X/2 -X/4=5
C)X/5+X/2=7/10
D)X/5+1=2X/3
E)X/2+X/3=1
F)X/3+4=2X
G)X/2+4=1/3
H) 5X/3-2/5=0
I)X-1=5-X/4
J) X+X/2=15
L)8X/3=2X-9
M)X/2+3/4=1/6

Answer 1

Resposta:

Explicação passo-a-passo:

A)X/2-X/4 =1/2   mmc= 2,4,2 :2 => 1,2,1 :2 => 1,1,1 => 2x2=4

2x-x=2

x=2

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B)X/2 -X/4=5   mmc= 2,4 :2 =>1,2:2 => 1,1 => 2x2=4

2x-x=5

x=5

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C)X/5+X/2=7/10    mmc= 5,2,10 :2=> 5,1,5 :5 => 1,1,1=> 2x5=10

2x+5x=7

7x=7

x=1

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D)X/5+1=2X/3   mmc= 5,3:3=> 5,1:5 =>1,1 => 3x5 =15

3x+15=10x

3x-10x=-15

-7x=-15  (-1)

x=15/7

-------------------------

E)X/2+X/3=1   mmc= 2x3=6

3x+2x=6

5x=6

x=6/5

--------------------

F)X/3+4=2X    mmc= 3

x+12=6x

x-6x=-12

-5x=-12  (-1)

x=12/5

---------------------

G)X/2+4=1/3     mmc= 2x3=6

3x+24=2

3x=2-24

x=-22/3

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H) 5X/3-2/5=0   mmc=3x5=15

25x-6=0

25x=6

x=6/25

----------------

I)X-1=5-X/4

4(x-1)=20-x

4x-4=20-x

4x+x=20+4

5x=24

x=24/5

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J) X+X/2=15

2x+x=30

3x=30

x=30/3

x=10

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L)8X/3=2X-9

8x=6x-27

8x-6x=-27

2x=-27

x=-27/2

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M)X/2+3/4=1/6  mmc= 2,4,6:2 => 1,2,3:2 =>  1,1,3:3 => 1,1,1 => 2x2x3 = 12

6x+9=2

6x=2-9

x=-7/6