Question

-5n+(m-2n)*(-3) ; -m*(m+3)-n*(5-m); 7a-3b+6a+3b если a=-5 b=-1 ; a*(5+m)-m*(a-6) если a=24 m=1

Answer 1

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Answer 2

Let's evaluate the given expressions:

1. For the expression -5n + (m - 2n) * (-3):

Substitute the values of n and m into the expression: -5n + (m - 2n) * (-3) = -5 * n + (m - 2 * n) * (-3) = -5 * n + (m + (-2) * n) * (-3)

As there are no given values for n and m, we cannot simplify the expression further without specific values.

2. For the expression -m * (m + 3) - n * (5 - m):

Substitute the values of m and n into the expression:

• m * (m + 3) - n * (5 - m) = - m * (m + 3) - n * (5 + (-m)) = - m * (m + 3) - n * (5 - m)

As there are no given values for m and n, we cannot simplify the expression further without specific values.

3. For the expression 7a - 3b + 6a + 3b, with a = -5 and b = -1:

Substitute the values of a and b into the expression: 7a - 3b + 6a + 3b = 7 * (-5) - 3 * (-1) + 6 * (-5) + 3 * (-1) = -35 + 3 + (-30) + (-3) = -35 + 3 - 30 - 3 = -65

Therefore, the result of the expression 7a - 3b + 6a + 3b, when a = -5 and b = -1, is -65.

4. For the expression a * (5 + m) - m * (a - 6), with a = 24 and m = 1:

Substitute the values of a and m into the expression: a * (5 + m) - m * (a - 6) = 24 * (5 + 1) - 1 * (24 - 6) = 24 * 6 - 1 * 18 = 144 - 18 = 126

Therefore, the result of the expression a * (5 + m) - m * (a - 6), when a = 24 and m = 1, is 126.