Question

ayuda porfavor ........​

Answer 1

Explicación paso a paso:

1) 3x + 5 = 5x – 13

3x – 5x = –13 – 5

–2x = – 18 /×-1

2X = 18

x = 18/2

x = 9

2) 5 ( 7–x ) = 31 – x

35 – 5x = 31 – x

– 5x + x = 31 – 35

–4x = – 4 /×-1

x = 4/4

x = 1

3) 4 ( 2–3x ) = –2x – 27

8 – 12x = –2x – 27

–12x + 2x = –27 + 12

–10x = –15 /×-1

x = 15/10

x = 3/2

4) 6x – 8 = 4 ( –2x + 5 )

6x – 8 = –8x + 20

6x + 8x = 20 + 8

14x = 28

x = 28/14

x = 2

5) 4x + 1 / 3 = 12x – 3 / 7

7 ( 4x + 1 ) = 3 ( 12x – 3 )

28x + 7 = 36x – 9

28x – 36x = –9 – 7

–8x = –16. /×-1

x = 16/8

x = 2

6) 2x – 5/12 = –x/4 –5/3. /×12

MCM = 12

2x – 5 = –3x – 20

5x = –15

X = –15/5

X = –3

7) 2x / 3 = 5x / 12 – 2. /×12

8x = 5x – 24

3x = –24

x = –24/3

x = –8

8) 4x / 33 + x = ⅓

4x × 3 = 33 + x

12x = 33 + x

11x = 33

x = 33 / 11

x = 3