tolong jawab dong x+1/5=2x-1/2

x+1/5 = 2x-1/2
x-2x = -1/2 -1/5
-x = -5/10 -2/10
-x = -7/10
x = 7/10

kalikan kedua ruas dengan 10 diperoleh
10x+2=20x-5
<=> 5 +2 = 20X-10X
<=> 7 = 10X
<=> 0.7 = X