Question

Ecuaciones de primer grado
1. 3x+7=0
2. X/2-1=x+1/2
3. 4-5/y=3
4. 2x-3=x+2
5. X+y=10
6. 16x-[3x-(6-9x)]=30x+[-(3x+2)-(x+3)]
7. 5x+12=9-(3/2)x
8. (1/2)x-6=2-(3/2)x
9. (4/3)x-3=(5x/4)-2
10. (8/3)x-1/2=(5x/2=(5x/2)+2
Ayuden!!! Porfav...

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Answer 1

Respuesta:

Explicación paso a paso:

3x+7=0

3x= - 7

X= - 7/3

X/2 - 1= x +1/2

X-2= 2x +1

X-2x= 1+2

-x= 3

X = - 3

4 - 5/y =3

4y - 5 = 3y

4y- 3y = 5

Y= 5

2x - 3= x+2

2x - x= 2+3

X= 5

X+y=10

X= Y-10

16x-[3x - (6-9x)] =30x+[- (3x+2)-(x+3)]

16x-[3x-6+9x] = 30x + [-3x-2 - x - 3]

16x-12x+6= 30x - 4x-5

16x - 12x - 30x +4x = - 5 - 6

-22x = - 11

-x= - 11/22

X = 1/22

5x+12= 9 - (3/2)x

5x+12= 9- 3x/2

10x + 24= 18 - 3x

10x +3x = 18-24

13x = - 6

X= - 6/13

(1/2)x - 6=2-(3/2)x

X/2 - 6 = 2 - 3x/2

X- 12 = 4 - 3x

X+3x = 4+12

4x= 16

X 16/4

X= 4

(4/3)x - 3= (5x/4) - 2

4x/3 - 3 = 5x/4 - 2

16x - 36= 15x - 24

16x - 15x = - 24 +36

X= 12

(8/3)x - 1/2= (5x/2) +2

8x/3 - 1/2= 5x/2 +2

16x - 3= 15x +12

16x - 15x = 12+3

X= 15

Un gusto ayudarte. Saludos

Att. Leonor