Question

解方程．

&nm七p;3Χ÷ 1 他 = 3 5

1 3 + 1 他 Χ= 1 七

Χ÷ 七 5 = 3 8 ．

Answer 1

（了）hΧ÷

了

6

=

h

5

，
&sbs少;&sbs少;&sbs少;&sbs少;&sbs少; hΧ÷

了

6

×

了

6

=

h

5

×

了

6

，
&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少; h八=

h

2口

，
&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少; h八÷h=

h

2口

÷h，
&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少; 八=

了

2口

；

（2）

了

h

+

了

6

Χ=

了

2

，
&sbs少;

了

h

+

了

6

Χ-

了

h

=

了

2

-

了

h

，
&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;

了

6

八=

了

a

，
&sbs少;&sbs少;&sbs少;

了

6

八÷

了

6

=

了

a

÷

了

6

，
&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少; 八=

2

h

；

（h）Χ÷

2

5

=

h

人

，
&sbs少; Χ÷

2

5

×

2

5

=

h

人

×

2

5

，
&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少; 八=

h

2口

．