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PLEASE HELP Solve |10x + 15| >= 105

User Jun
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|10x + 15| \geq 105\\ 5|2x + 3| \geq 105\\ |2x+3|\geq21\\ 2x+3\geq21 \vee 2x+3\leq-21\\ 2x\geq 18\vee2x\leq-24\\ x\geq9 \vee x\leq-12\\ x\in(-\infty,-12\rangle\cup\langle9,\infty)
User Bersaelor
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