Ответ:
4а-7=4•(-3)-7= -12-7= -19
-2а+9= -2•(-3)+9=6+9=15
3а-7 < -2а+9
-19 < 15
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Ответ:
4а-7=4•(-3)-7= -12-7= -19
-2а+9= -2•(-3)+9=6+9=15
3а-7 < -2а+9
-19 < 15
4а-7=4•(-3)-7= -12-7= -19
-2а+9= -2•(-3)+9=6+9=15
3а-7 < -2а+9
-19 < 15