Mathematics Worksheet/Algebra/Addition and subtraction of algebraic terms

Do the questions carefully. (40 questions)

1. $\!7(\!3x+\!2)-\!x=\cdots$
2. $\!(\!6x+\!3)+\!(-5x)=\cdots$
3. $\!4(\!3x+\!3)=\cdots$
4. $\!6(\!5-\!3x)+\!(\!4x+\!2)=\cdots$
5. $\!(\!7x^2-\!6x)+\!3x^2-\!8x=\cdots$
6. $\!5x(\!4+\!3y)+\!7x-\!2(\!3x+\!y)=\cdots$
7. $\!4(\!3x+\!2y)=\cdots$
8. $\!-7y(\!3x-\!5)+6x=\cdots$
9. $\!-5x(\!3x+\!7y)-5y=\cdots$
10. $\!3x+\!7y+\!5x+\!8y=\cdots$
11. $\!5(\!4x+\!3y)-\!5y+\!6x=\cdots$
12. $\!6x+\!5xy-\!7y+\!5y-\!9x+\!7x=\cdots$
13. $\!-5(\!3x+\!6y)+\!15y=\cdots$
14. $\!5x(\!y+\!4x)-\!9y-\!4x^2=\cdots$
15. $\!4y(\!3x+\!x^2)+\!(-8x^2)=\cdots$
16. $\!-6x(\!4y+\!5)+\!5y-\!7x=\cdots$
17. $\!9(\!7x+y^3)-\!6y^3+\!20x=\cdots$
18. $\!4x+\!7y-\!7x+5y-\!8x+\!5y-\!6x=\cdots$
19. $\!3x(\!2x+\!y)+\!10y=\cdots$
20. $\!-5y+\!6x-\!7y+\!8x=\cdots$
21. $\!6x^2+\!5x+\!4x^2-\!5x=\cdots$
22. $\!3y+\!5x-\!5(\!2x+\!5y)=\cdots$
23. $\!-9(\!3x+\!5y)-4y=\cdots$
24. $\!5x^2+\!3y-\!3x^2-\!6y+\!5x-\!8x=\cdots$
25. $\!12x(\!3x+\!6y)+\!5xy=\cdots$
26. $\!4(\!3x-\!7y)+\!5(\!6x+\!3y)=\cdots$
27. $\!5x(\!5x+\!3y)+(\!4x-\!5y)=\cdots$
28. $\!(\!3x+\!5y)\times\!(\!5x-\!y)=\cdots$
29. $\!(\!5x+\!3y)\times\!(\!3x-\!6y)=\cdots$
30. $\!(\!4x-\!4y)\times\!(\!6x-\!6y)=\cdots$
31. $\![(\!3x+\!2)+\!5y]+\!3x-\!5y-\!9x=\cdots$
32. $\![\!5x(\!3x+\!2y)+5xy-\!9x]+\!5x=\cdots$
33. $\!7x-\![(\!5x+\!y)\times\!(-7y)=\cdots$
34. $\![(\!6x+\!9)+\!7y(\!5+\!3x)]+\!24xy=\cdots$
35. $\!(\!x+\!y)\times\!2+\![(\!8y+\!x-\!4y)+(\!3x+\!5y-\!x)]=\cdots$
36. $\!(\!6x-\!4)\times\!(\!4x+\!5)\times\!(\!5x+\!6)=\cdots$
37. $\![\!4\times\!(\!3+\!7y)-\!17y]+\![(\!6x+\!5y-\!9x+\!(-7y)]=\cdots$
38. $\!5y\times\!(\!3+\!x)-\![\!5\times\!(\!5x-\!3y)+\!30x]=\cdots$
39. $\![\!(\!5x+\!5y)-\!(\!7y-\!(-3x)-\!y)]+\!(\!30x+\!15y)=\cdots$
40. $\!7x^2+\!5x-\!6y+\!5x^2-\!5x+\!7y-\!18x+\!8xy+\!x^2+\!12x-\!6y-\!7x^2+\!5x-\!4y\times\!(\!3x-\!6)+\!10xy-\!4x^2+\sqrt[3]{\!27x^3}=\cdots$