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Multi-Step Proportions #5
供稿人: Bennett
p =
p
7
=
p - 9
4
3
m =
5
=
m - 4
m
x
x =
2
- 4
=
x
6
x
3
x =
=
x - 6
4
a =
a - 6
3
=
a
4
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