1、2x+5= 15。
Answer: x=5.
2、4x-7=9 .
Answer: x=4.
3、3(x-2)=9 .
Answer: x=5.
4、5(x+3)=35 .
Answer: x=4.
5、7x+2=23 .
Answer: x=3.
6、6x-9=2 1 .
Answer: x=5.
7、8x+4=36 .
Answer: x=4.
8、x-4=8 .
Answer: x= 12.
9、2(x+6)=20 .
Answer: x=4.
10、x+8= 15。
Answer: x=7.
1 1、5x-2= 13 .
Answer: x=3.
12、x+3=9 .
Answer: x=6.
13、2(x-4)=6 .
Answer: x=7.
14、x-7=2 .
Answer: x=9.
15、3x+5=20 .
Answer: x=5.
16、x+9= 17。
Answer: x=8.
17、4x-3= 13 .
Answer: x=4.
18、x-5= 10。
Answer: x= 15.
19、2(x+3)= 14 .
Answer: x=4.
20、x+6= 12 .
Answer: x=6.
2 1、x/2+3=6 .
Answer: x=6.
22 、( x-3)/4=2 .
Answer: x= 1 1.
23 、( 2x-5)/3=7 .
Answer: x=7.
24 、( x+4)/5=3 .
Answer: x= 1 1.
25 、( 3x+2)/2=8 .
Answer: x=5.
26 、( 4x-7)/6=5 .
Answer: x=8.5 (or write a score).
27 、( 5x+3)/3= 10 .
Answer: x=5.4 (or write a score).
28 、( 2x-9)/5=7 .
Answer: x=22.
29 、( 3x+6)/4=9 .
Answer: x= 10.
30 、( 4x-3)/7=6 .
Answer: x= 12.75 (or written with a score).
3 1 、( 5x- 10)/3=5 .
Answer: x=7.
32 、( 6x+ 10)/8=7 .
Answer: x=4.
33 、( 2x-3)/4= 10 .
Answer: x=2 1.5 (or written in fractions).
34 、( 3x+5)/2= 16 .
Answer: x=9 (or written with a score).
35 、( 4x-7)/5= 12 .
Answer: x=22.75 (or write a score).
36 、( 5x-8)/6=9 .
Answer: x= 12.8 (or write a score).
37 、( 2x-5)/4= 15 .
Answer: x=37.5 (or write a score).
38 、( 3x+2)/5= 14 .
Answer: x=48 (or write a score).
39 、( 4x-5)/7= 16 .
Answer: x=37.75 (or write a score).
40 、( 5x+6)/8=20 .
Answer: x=37.2 (or write a score).
The sixth grade equation problem features:
1, diversification: the form and content of equation problems are more diversified, involving a wider range of knowledge, including integers, decimals, percentages, fractions and other types of numbers.
2. Complexity: The number of unknowns in the equation increases, and the form of the equation is more complicated, which requires more mathematical knowledge and methods to solve.
3. Background of practical problems: The sixth grade equation problems are often based on practical problems, requiring students to analyze the problems, establish mathematical models and then solve them. This requires students to have strong ability to analyze and solve problems.
4. Abstraction: Equation problems are abstract, which requires students to have certain mathematical thinking and logical reasoning ability in order to correctly understand and solve problems.
5. Systematization: The knowledge points of the sixth grade equation problems are closely related, forming a relatively complete mathematical knowledge system. Students need to comprehensively use relevant knowledge points when solving problems, which requires students to have strong knowledge integration and application ability.