如题所述
101*78
=(100+1)*78
=100*78+1*78
=7800+78
=7878
=(100+1)*78
=100*78+1*78
=7800+78
=7878
温馨提示:答案为网友推荐,仅供参考
第1个回答 2011-11-03
=(100+1)*78
=10*78+1*78
=7800+78
=7878
=10*78+1*78
=7800+78
=7878
第2个回答 2011-11-17
12/X-1=15/2X
两边乘60
5X-5=8X
8X-5X=-5
3X=-5
X=-5/3
5/Y+17-4/3Y-7=-2
两边乘20
4(Y+17)-5(3Y-7)=-40
4Y+68-15Y+35=-40
11Y=143
Y=143÷11
Y=13
两边乘60
5X-5=8X
8X-5X=-5
3X=-5
X=-5/3
5/Y+17-4/3Y-7=-2
两边乘20
4(Y+17)-5(3Y-7)=-40
4Y+68-15Y+35=-40
11Y=143
Y=143÷11
Y=13
第3个回答 2011-11-03
101*78=(100+1)*78
=100*78+1*78
=7878
=100*78+1*78
=7878
第4个回答 2011-11-03
100*78+1*78=7878