29×【1÷3】+1/3= 4.2:5.6=7:x

来源:学生作业学帮网 编辑:学帮网 时间:2024/05/27 11:32:54

29×【1÷3】+1/3= 4.2:5.6=7:x

29×【1÷3】+1/3
=1/3×(29+1)
=1/3×30
=10
4.2:5.6=7:x
4.2x=5.6×7
4.2x=39.2
x=39.2÷4.2
x=28/3