七下数学题亲们快解( •̀∀•́ )3|x|-1≤|x|+5
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七下数学题亲们快解( •̀∀•́ )3|x|-1≤|x|+5
七下数学题亲们快解( •̀∀•́ )
3|x|-1≤|x|+5
七下数学题亲们快解( •̀∀•́ )3|x|-1≤|x|+5
化简可以得到X的绝对值小于等于3,所以X大于等于-3小于等于3.