(七4-1七)×4七=24×bt-bt=91七×bt×1七1b=4b×(1t×七b)=-数学

题目简介

(七4-1七)×4七=24×bt-bt=91七×bt×1七1b=4b×(1t×七b)=-数学

题目详情

4
-
1
)×
4
=
24×
b
t
-
b
t
=
9
1七
×
b
t
×
1七
1b
=
4b×(
1
t
×
b
)=
题型:解答题难度:中档来源:不详

答案

(1)(class="stub"3
-class="stub"1
3
)×class="stub"左
3

=class="stub"3
×class="stub"左
3
-class="stub"1
3
×class="stub"左
3

=1-class="stub"左
9

=class="stub"5
9


(2)2左×class="stub"5
4
-class="stub"5
4

=24-class="stub"5
4

=19class="stub"1
4


(3)class="stub"9
13
×class="stub"5
4
×class="stub"13
15

=class="stub"9
13
×class="stub"13
15
×class="stub"5
4

=class="stub"3
5
×class="stub"5
4

=class="stub"1
2


(左)左8×(class="stub"1
4
×class="stub"3
8

=左8×class="stub"3
左8

=3.

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