3/8×7+1÷8/3 3/5-3/7+2/5-4/7 (1/125+4/5)×125 1/2+93/8×7+1÷8/33/5-3/7+2/5-4/7(1/125+4/5)×1251/2+9/20÷9/10-5/8

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/06 02:43:48

3/8×7+1÷8/3 3/5-3/7+2/5-4/7 (1/125+4/5)×125 1/2+93/8×7+1÷8/33/5-3/7+2/5-4/7(1/125+4/5)×1251/2+9/20÷9/10-5/8
3/8×7+1÷8/3 3/5-3/7+2/5-4/7 (1/125+4/5)×125 1/2+9
3/8×7+1÷8/3
3/5-3/7+2/5-4/7
(1/125+4/5)×125
1/2+9/20÷9/10-5/8

3/8×7+1÷8/3 3/5-3/7+2/5-4/7 (1/125+4/5)×125 1/2+93/8×7+1÷8/33/5-3/7+2/5-4/7(1/125+4/5)×1251/2+9/20÷9/10-5/8
3/8×7+1÷8/3
=3/8x7+1x3/8
=3/8x(7+1)
=3/8x8
=3
3/5-3/7+2/5-4/7=(3/5+2/5)-(3/7+7/7)
=1-1
=0
(1/125+4/5)×125
=1/125x125+4/5x125
=1+100
=101
1/2+9/20÷9/10-5/8
=1/2+1/2-5/8
=1-5/8
=3/8
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