\(x\times1,4=2,8\times1,5\)
\(x\times1,4=4,2\)
\(x=4,2:1,4\)
\(x=3\)
\(1,02\times x=3,57\times3,06\)
\(1,02\times x=10,9242\)
\(x=10,9242:1,02\)
\(x=10,71\)
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