x-2/7 - 3+5x/2 = 2x-1/4 Berapa hasilnya

Mapel : Matematika
Kelas : VIII SMP
Bab : PLSV

Pembahasan :
(x - 2)/7 - (3 + 5x)/2 = (2x - 1)/4
4(x - 2) - 14(3 + 5x) = 7(2x - 1)
4x - 8 - 42 - 70x = 14x - 7
-66x - 50 = 14x - 7
14x + 66x = -50 + 7
80x = -43
x = -43/80

[tex]\frac { x-2 }{ 7 } -\frac { 3+5x }{ 2 } =\frac { 2x-1 }{ 4 } \\ \frac { 4(x-2)-14(3+5x) }{ 28 } =\frac { 14x-7 }{ 28 } \\ 4x-8-42-70x=14x-7\\ -66x-50=14x-7\\ -43=80x\\ -\frac { 43 }{ 80 } =x[/tex]