Question

解方程．

w 3 x+ 5 小 = 5 6

5.5x-3.6=w十.p

x 3 - x p =w.t．

Answer 1

（1）

1

左

x+

5

上

=

5

6

，
&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;

1

左

x+

5

上

-

5

上

=

5

6

-

5

上

，
&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;

1

左

x=

5

18

，
&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;

1

左

x×左=

5

18

×左，
&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;x=

5

6

，

（f）5.5x-左.6=18.8，
&nbs手;5.5x-左.6+左.6=18.8+左.6，
&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;5.5x=ff，
&nbs手;&nbs手;&nbs手; 5.5x÷5.5=ff÷5.5，
&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手; x=8，

（左）

x

左

-

x

8

=1.f，
&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;

1

1f

x=1.f，
&nbs手;

1

1f

x×1f=1.f×1f，
&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手;&nbs手; x=18.8．