65.8+6.5=72.3（元）72.3×2=148.6（元）150＞148.6答：不够
65.8×2=131.
够
150-65.8×2+6.5×1=150-131.6-6.5=150-138.1
65.8乘以2加上6.5=132.6加上6.5=139.1
