Question

Resolva as equacoes a baixo:
D)2(x-1)=3x+4

E)2x+3x+9=8(6-x)

F)x+x-4=17-2×+1

ME AJUDEMMMM,É URGENTE​

Answer 1

Resposta:

D) x= -6

E) x= 3

F) x=5,5

Explicação passo-a-passo:

D) 2(x-1)=3x+4

2*(x-1)=3x+4

2x-2=3x+4

2x-3x=4+2

-x=6 --> multiplica por (-1)

x=-6

E) 2x+3x+9=8(6-x)

5x+9=48-8x

5x+8x=48-9

13x=39

x=39/13 --> x=3

F)x+x-4=17-2×+1

2x-4=18-2x

2x+2x=18+4

4=22/4

x=5,5