jawaban dan penjelasannya kk pleeeaaseee :( tentukan nilai yg memenuhi persamaan berikut. a. 5x + 2 = 0 b. x + 5 = -6 c. 2 x - 1 = 4 x -3 d. 3 x - 7 = 4 x - 5 e

Bab Aljabar
Matematika SMP Kelas VII

a] 5x + 2 = 0
    5x = -2
    x = -2/5

b] x + 5 = - 6
    x = -6 - 5
    x = -11

c] 2x - 1 = 4x - 3
    2x - 4x = -3 + 1
    -2x =  -2 
    x = -2/-2
    x = 1

d] 3x - 7 = 4x - 5
    3x - 4x = -5 + 7
    -x = 2
     x = -2

e] 5 (3x - 7) = 4
    15x - 35 = 4
    15x = 4 + 35
     x = 39/15
     x = 2 9/15
     x = 2 3/5