Question

me ayudan es urgente

Answer 1

a) 3x+5=5x-13

3x-5x=-13-5

-2x=-18

x= -18/2

x=9

b) 5(7-x)=31-x

5×7×x = 35-5x

35-5x=31-x

-5x+x = 31-35

-4x = -4

x= -4/4

x= 1

c) 4(2-3x)= -2x-27

4×2×3x = 8-12x

8-12x = -2x-27

-12x+2x = -27-8

-10x = -35

x= -35/10

x= -7/2 o -3.5

d) 6x-8=4(-2x+5)

4×-2x×5 = -8x+20

6x-8=-8x+20

6x+8x=20+8

14x=28

x= 28/14

x= 2

e) 3(2x-2)=2(3x+9)

3×2x×-2 = 6x-6

2×3x×9 = 6x+18

6x-6=6x+18

6x-6x-6=18

-6=18

NO TIENE RESPUESTA.

f) 3(4x+7)=4x-25

3×4x×7= 12x+21

12x+21=4x-25

12-4x=-25-21

8x= -46

x= -46/8

x= -23/4

g) 7x+15=3(3x-7)

3×3x×-7 = 9x-21

7x+15=9x-21

7x-9x= -21-15

-2x= -36

x= -36/2

x= 18