Ответ:
[tex]1)5x \geqslant 7.5 \\ x \geqslant 7.5 \div 5 \\ x \geqslant 1.5 \\ 2)7 - 2x < 0 \\ - 2x < - 7 \\ x > 3.5 \\ 3)9(x - 4) + 2(x + 5) > 10(x - 2) + 12 \\ 9x - 36 + 2x + 10 > 10x - 20 + 12 \\ 11x - 10x > - 8 + 36 - 10 \\ x > 18[/tex]
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Ответ:
[tex]1)5x \geqslant 7.5 \\ x \geqslant 7.5 \div 5 \\ x \geqslant 1.5 \\ 2)7 - 2x < 0 \\ - 2x < - 7 \\ x > 3.5 \\ 3)9(x - 4) + 2(x + 5) > 10(x - 2) + 12 \\ 9x - 36 + 2x + 10 > 10x - 20 + 12 \\ 11x - 10x > - 8 + 36 - 10 \\ x > 18[/tex]