作业帮计算下面各题,能简便计算的用简便方法计算 2-6/13÷9/26 (1/3+1/4)×36 6/7×(4/5-2/3)÷1/53/4-3/4×4/7+9/7
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/19 11:39:02
xŒ;N0іIHi@\ T !1Љ) CA*0*mNvl i`!}JXWueOt9n7{볗:]Wˇ@VϫǫO0agp0AHbPHKHTLcM31]&[(G
ѐ .
2D\EyS=;q0[6phJP#ͮr;oOnN|z; m]ZQa"LR89~ 'QwՓ+
计算下面各题,能简便计算的用简便方法计算 2-6/13÷9/26 (1/3+1/4)×36 6/7×(4/5-2/3)÷1/53/4-3/4×4/7+9/7
计算下面各题,能简便计算的用简便方法计算 2-6/13÷9/26 (1/3+1/4)×36 6/7×(4/5-2/3)÷1/5
3/4-3/4×4/7+9/7
计算下面各题,能简便计算的用简便方法计算 2-6/13÷9/26 (1/3+1/4)×36 6/7×(4/5-2/3)÷1/53/4-3/4×4/7+9/7
2-6/13÷9/26
= 2- (6/13)×(26/9)
=2- 4/3
=2/3
.
(1/3+1/4)×36
=(1/3)×36 +(1/4)×36
=12+9
=21
.
6/7×(4/5-2/3)÷1/5
=(6/7)×(4/5 - 2/3)×5
=(6/7)×(4 - 10/3)
=(6/7)×(2/3)
=4/7
.
3/4-3/4×4/7+9/7
=(3/4)×(1- 4/7）＋9/7
=(3/4)×(3/7）＋9/7
=(1/4)×(9/7)+ 9/7
=(1/4 +1)×(9/7)
=(5/4)×(9/7)
=45/28
=1又17/28