Question

URGENTE:RESOLVA AS EQUAÇÕES

c) x + 5,41 = 3,87
d) 3(2x - 1) = -2(x + 3)
e) 4(x + 10) - 2(x - 5) = 0
f) 3,5x + 8 = 2(x + 7)

Answer 1

$c) x=3,87-5,41 = -1,54$
$d) 6x-3=-2x-6\\8x=-3\\x=-0,375$
$e) 4x+40=-2x+10\\6x=-30\\x=-5$
$f)3,5x+8=2x+14\\1,5x=6\\x=4$

Answer 2

C) x + 5,41 = 3,87
    x = 3,87 - 5,41
    x = - 1,54

D) 3 ( 2x - 1 ) = - 2 ( x + 3 )
    6x - 3 = - 2x - 6
    6x + 2x = - 6 + 3
     8x = - 3
      x = -3/8
      x = - 0,375

E) 4 ( x + 10 ) - 2 ( x + 5 ) = 0
    4x + 40 - 2 x - 10 = 0
    4x - 2x = - 40 + 10
    2x = - 30
     x = - 30/2
     x = - 15

F) 3,5x + 8 = 2 ( x + 7 )
    3,5x + 8 = 2x + 14
    3,5x - 2x = 14 - 8
    1,5x = 6
        x = 6/1,5
        x = 4

Espero ter ajudado! ;)