Given: q = 7m + 3n, r = 11 - 2m, s = n + 5, and t = -m - 3n + 8.
simplify q - [r + s] - t.
10m + 5n - 24
10m - 5n + 24
10m + 7n - 14
10m - 7n - 14

Q - [R + S] - T = 10m + 5n - 24 ⇒ 1st answer

Step-by-step explanation:

* Lets explain how to solve the problem

- The value of Q = 7m + 3n

- The value of R = 11 - 2m

- The value of S = n + 5

- The value of T = -m - 3n + 8

* To simplify Q - [R + S ] - T substitute the value of each letter in

  the expression

- Lets find R + S

∵ R = 11 - 2m

∵ S = n + 5

∴ R + S = 11 - 2m + n + 5 ⇒ coolect the like term

∴ R + S = 16 - 2m + n

∵ Q = 7m + 3n

∵ T = -m - 3n + 8

- Lets simplify the rest of the expression

- Remember (-)(-) = + and (-)(+) = -

∵ Q - [R + S] - T = (7m + 3n) - (16 - 2m + n) - (-m - 3n + 8)

∴ Q - [R + S] - T = 7m + 3n -16 + 2m - n + m + 3n - 8 ⇒ add like terms

∴ Q - [R + S] - T = (7m + 2m + m) + (3n - n + 3n) + (-16 - 8)

∴ Q - [R + S] - T = 10m + 5n - 24

ab: 2 n83b8eb7ebi. 8e yen in

1.true 2.false? ? i think. .

step-by-step explanation: