х−1,15=3,4+(2,3–1,4).
х-1,15=3,4+1,3-1,4
х-1,15=4,3
х=4,3+1,15
х=5,45
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х−1,15=3,4+(2,3–1,4).
х-1,15=3,4+1,3-1,4
х-1,15=4,3
х=4,3+1,15
х=5,45