a) \(0,8 \times x = 1,2 \times 10\)
\(0,8 \times x = 12\)
\(x = 12:0,8\)
\(x =15\)
b) \(210 : x = 14,92 – 6,52\)
\(210 : x = 8,4 \)
\(x = 210 : 8,4 \)
\(x = 25 \)
c) \(25 : x = 16 : 10\)
\(25 : x = 1,6\)
\(x = 25 : 1,6\)
\(x=15,625\)
d) \(6,2 \times x = 43,18 + 18,82\)
\(6,2 \times x = 62\)
\(x = 62 : 6,2\)
\(x = 10\)