Question

resolva as equações ( favor deixar a conta )
a) 5x + 3x = 16
b) x + x + 8 = 54
c) 7x - 2 - 5x = 18
d) 12x - 10x - 4 = 3
e) -x - 2x - 4 = 11
f) 8x = 5x + 4,5
ME AJUDEM POR FAVOR E N ESQUEÇAM D DEIXAR AS CONTAS ... OBGD ...

Answer 1

a)5x+3x=16
8x=16
x=16÷8
×=2

b) x+x+8=54
×^=54-8
x^=46
?

c)7x-2-5×=18
7×-5×=18+2
2×=20
×=20÷2
×=10

d)12x-10x-4=3
12×-10×=3+4
2×=7
×=7÷2
x =3.5

e)?

f)8x=5×+4,5
8×-5×=4,5
3×=4,5
×=4,5÷3
×=1.5

Answer 2

a)5x+3x=16
  8x=16
  x=16/8
  x=2

b)x+x+8=54
   2x=54-8
   2x=46
   x=46/2
   x=23

c)7x-2-5x=18
   7x-5x=18+2
   2x=20
   x=20/2
   x=10

d)12x-10x-4=3
   12x-10x=3+4
   2x=7
   x=7/2

e)-x-2x-4=11
   -x-2x=11+4
   -3x=15
    x=15/-3
    x=-5

f)8x=5x+4,5
  8x-5x=4,5
  3x=4,5
  x=4,5/3
  x=1,5