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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 :

gwendoline05

Answer:

  1. 2(4+4) + 10 = 26
  2. 3(4(4)) + 4 = 52
  3. 10(5(6)) = 300
  4. 2(5 + 6) = 22
  5. 3(2(3)) + 4(5) = 38
  6. 2(1) + 2(5 + 4) = 20
  7. 6(3(4) + 4(3)) = 84
  8. 10(10(5)) + 10(6) = 560
  9. 5(5(6)) = 150
  10. 2(3)(4) = 24
  11. (2)(3)(4)(5)(6) = 720
  12. 6(2(5) + 3(6) = 78
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