23.數(shù)軸上有不同兩點(diǎn)A,B,點(diǎn)A表示的數(shù)為3x+2,點(diǎn)B表示的數(shù)為2x-3.
(1)若點(diǎn)A表示的數(shù)的相反數(shù)是-8,求點(diǎn)B表示的數(shù).
(2)若點(diǎn)A與點(diǎn)B之間的距離為6,且點(diǎn)A在點(diǎn)B的右側(cè),求x的值.
(3)在(1)的條件下,在數(shù)軸上有兩動(dòng)點(diǎn)P,Q,若動(dòng)點(diǎn)P從點(diǎn)A出發(fā)向點(diǎn)B運(yùn)動(dòng),同時(shí)動(dòng)點(diǎn)Q從點(diǎn)B出發(fā)向點(diǎn)A運(yùn)動(dòng),經(jīng)過(guò)2秒相遇;若動(dòng)點(diǎn)P從點(diǎn)A出發(fā)向點(diǎn)B運(yùn)動(dòng),同時(shí),動(dòng)點(diǎn)Q從點(diǎn)B出發(fā)與點(diǎn)P同向運(yùn)動(dòng),經(jīng)過(guò)6秒相遇,求P點(diǎn)與Q點(diǎn)的運(yùn)動(dòng)速度.