=9. 14* 1.25- 1. 14* 1.25

=(9. 14- 1. 14)* 1.25

=8* 1.25

= 10

5.0.058/0.4*4=0.58

6.0.400…… 10203

7.( 13+ 17)/4=7

2□(3□5)=[(3+5)/4+2]/4= 1

(A+ 16)/4= 10

A+ 16=40

A=24

8.22.5×2+5X= 135

55+5X= 135

5X=80

X= 16

6X- 1.5X=3.6+2.7

4.5 times =6.3 times

X= 1.4

5.5X- 1.3X= 12.6

4.2X= 12.6

X=3

2.3X+4. 1×2= 12.8

2.3X+8.2= 12.8

2.3 times =4.6 times

X=2

10. Rats, cows, tigers, rabbits, dragons, snakes,

Horses, sheep, monkeys, chickens, dogs, pigs and 12 animals represent the year number of each year in turn. For example, the first year is the Year of the Rat, the second year is the Year of the Ox, and the third year is the Year of the Tiger. If 1 is the Year of the Rooster, then 2008 is the Year of the Rooster (

Rat) year.

1 1.

4X- 12X0.5=28.6

4X-6=28.6

4X=22.6

X=5.65

12.5+4X=36.5-2X

6X=24

X=4

5X-7.2+2.8= 12

5X=5.6

X= 1. 12

2X+4X=42

6X=42

X=7

9X- 1.5×4=7.5

9X-6=7.5

9X= 13.5

X= 1.5

2(X-5)+0.8=3.6

2X- 10+0.8=3.6

2X= 12.8

X=6.4