х+3.5=-3.8
х= -3.8-3.5
х = -7.3
---------------
-х+3.4=-1.6
-х=-1.6-3.4
-х=-5
х=5
-----------------
-х-48=75
-х=75+48
-х=123
х=-123
----------------
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Answers & Comments
х+3.5=-3.8
х= -3.8-3.5
х = -7.3
---------------
-х+3.4=-1.6
-х=-1.6-3.4
-х=-5
х=5
-----------------
-х-48=75
-х=75+48
-х=123
х=-123
----------------