Ответ:
16х -88 +21х -154 = 4х-176
16х +21х -4х=+88 +154 -176
33х= 66
х=2
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Ответ:
16х -88 +21х -154 = 4х-176
16х +21х -4х=+88 +154 -176
33х= 66
х=2