1.若-6=0.87,则|6|=______
1.若-6=0.87,则|6|=______
27046=2×______+7×______+4×______+6×______.
若a:3=b:4=c:5,且a+b-c=6,则a=______,b=______,c=______.
若a+b=5,ab=6,则:①a4+b4=______;a8+b8=______.
若x2-4x+y2+6y+13=0,则x=______,y=______.
0.87×99+0.87=______×______.
已知实数a,b,c满足a=6-b,c2=ab-9,则a=______,b=______,c=______.
已知x2-y2=12,x+y=6,则x-y=______,x=______,y=______.
0.375=6:______=()80
6/5=______(化为百分数).
当x=______时,x+6
若2x2+3m+6m=0是关于x的一元一次方程,则m=______,这个方程的解是______.