Question

решите уравнение:1,8:6,8=0,042:7/6x+0,042

Answer 1

18/10:68/10=42/1000×6/7x+42/1000
18/10×10/68=6/500×3x+21/500
9×1/34=3/250×3x+21/500
9/34=9/250x+21/500
8500×9/250×9/250x+8500×21/500
250×8=34×9x+17×21
2250=306x+357
-306x=-1893
x=1893/306
x=631/102