Question

19,4x-(6,9-7,2)=9,02

Answer 1

19,4x-(6,9-7,2)=9,02
19,4x+0.3=9,02
19.4х=9.02-0.3
19.4х=8.72
х=8.72:19.4


$x= frac{218}{485}$≈0.45