Question

resolva essas equação:

a) 4(×+1)=12

b) 5(3-×)-4×=18

c) 2,5(×-2)-1,5×=1

d)3,5×+8=2(×+7)

e) 6(3×+2)-8=-2

Pfv me Ajudem Obg!!!!!!!!!!


​

Answer 1

Resposta:

a)4x+4=12

4x=12-4

x=2

b) 5(3-x)-4x=18

15-5x-4x=18

-9x=18-15

x=-1/3

c) 9x-6x+6=15

3x=15-6

x=9/3

x=3

d)2.5x-5-1.5x=1

1x=1+5

x=6

e) 3,5x+8=2(x+7)

3.5x+8=2x+14

3.5x-2x=14-8

1.5x=6

x=4

f) 18x+12-8=-2

18x=-2-12+8

18x=-14+8

18x=-6

x=-1/3

g) -3x+15-4x-2=-8

-7x=-8-13

-7x=-21

x=3

Explicação passo-a-passo: