Answered

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WILL GIVE BRAINLIEST
Use your knowledge about parentheses and substitution to solve the following:

q = 1; r = 2; s = 3; t = 4; x = 5; y = 6

7. 2(x+4) + 10 =

8. 3(4x) + 4 =

9. 10(xy) =

10. 2(x + y) =

11. 3(rs) + 4(x)

12. 2(q) + 2(x + t) =

13. 6(3t + 4s) =

14. 10(10x) + 10y =

15. x(xy) =

16. r(s)(t) =

17. (r)(s)(t)(x)(y) =

18. 6(2x + 3Y) =

Sagot :

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Answer:

7. 28

8.  64  

9.  300  

10.  22  

11. 38

12. 20  

13. 144  

14.  560  

15.  150  

16. 24  

17. 720

18.  168

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