Jawaban nomor delapan belas kak

jawab

(x +3)/2  + (3x)/ 7  = 4x  - (8x -1)/2.....kalikan 14

7(x +3) + 2(3x) = 28x - 7(8x -1)
7x + 21 + 6x = 28 x - 56x + 7
13 x + 21 =  - 28 x + 7
13x + 28 x = 7 - 21
41 x = - 14
x = - 14/41

x + 3/2 + 3x/7 = 4x - 8x - 1/2
1/2x + 3/2 + 3/7x = 4x - 4x -1/2
1/2x + 3/7x - 4x + 4x = -1/2 -3/2
13/14x = -2
x = -2 x 14/3
x = - 28/13