Question

resolva as equacoes

a)5(-x-7)=6-4+8

b)6(x-3)=7(x+1)-16

c)7-4(-x+3)=2x

d)3x-(x-8)= -10​



ajudem por favor

Answer 1

Resposta:

a)5(-x-7)= 6-4+8

-5X -35 = 6-4X+8

5X+4X = 35 +6+8

-X=35+6+8

X= 41 + 8

-X= 49

X= 49/-1

X= -49

B)6(x-3)=7(x+1)-16

6x - 7x = 7 -16 +18

-1x = 9

x= 9/-1

x= -9

C)7-4(-x+3)=2x

3(-x+3)=2x

-3x+9=2x

-3x=2x-9

-5x=-9

x=9/5

D)3x-(x-8)= -10​

3x - x + 8 = - 10

2x+8=-10

2 x  = -10-8

2 x = − 18

x=-18/2

x= -9