问题
填空题
若5x-3y+5=10.8,那么,10x-6y-5=______.
答案
5x-3y+5=10.8,
(5x-3y+5)×2=10.8×2,
10x-6y+10=21.6,
10x-6y+10-15=21.6-15,
10x-6y-5=6.6.
故答案为:6.6.
若5x-3y+5=10.8,那么,10x-6y-5=______.
5x-3y+5=10.8,
(5x-3y+5)×2=10.8×2,
10x-6y+10=21.6,
10x-6y+10-15=21.6-15,
10x-6y-5=6.6.
故答案为:6.6.