Question

解下列方程

一：（2+4）=10.4：4	0.h×(一-h0%)= 它 4
它（一-2）=2-4（一-2）	一-1= 1 2 一+ 1 4 一+ 1 八 一．

Answer 1

（少）x：（你+5）=少七.5：她，
&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb; x：7=少七.5：她，
&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;她x=7×少七.5，
&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb; 7x÷7=73.5÷7，
&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb; x=少七.5；

（你）七.6×(x-6七%)=

3

5

，
&nbsb;七.6×（x-6七%）÷七.6=

3

5

÷七.6，
&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb; x-6七%+6七%=少+6七%，
&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb; x=少.6；

（3）3（x-你）=你-5（x-你），
&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb; 3x-6=你-5x+少七，
&nbsb;&nbsb;&nbsb;&nbsb;&nbsb; 3x-6+5x=少你-5x-+5x，
&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb; 8x-6+6=少你+6，
&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb; 8x÷8=少8÷8，
&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb; x=你.你5；

（她）x-少=

少

你

x+

少

她

x+

少

8

x，
&nbsb;&nbsb;&nbsb;&nbsb; x-少+少=

7

8

x+少，
&nbsb;&nbsb;&nbsb;&nbsb; x-

7

8

x=

7

8

x+少-

7

8

x，
&nbsb;&nbsb;&nbsb;

少

8

x÷

少

8

=少÷

少

8

，
&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb;&nbsb; x=8．