Question

5(n+2m)-4(2m-3)-12,.якщо n=1.2иm=-6

Answer 1

Ответ:

-6

Объяснение:

5n+10m-8m+12-12=5n+2m

5*1,2*2*(-6)= 6-12=-6

Answer 2

To evaluate the expression 5(n + 2m) - 4(2m - 3) - 12, we substitute the given values of n and m into the expression and perform the calculations.

Let's calculate step by step:

n = 1.2 m = -6

First, substitute n and m into the expression:

5(1.2 + 2(-6)) - 4(2(-6) - 3) - 12

Simplify the innermost parentheses:

5(1.2 - 12) - 4(-12 - 3) - 12

Perform the multiplication inside the parentheses:

5(-10.8) - 4(-15) - 12

Multiply the values:

-54 - (-60) - 12

To subtract a negative number, we can rewrite it as addition:

-54 + 60 - 12

Perform the addition:

6 - 12

Finally, subtract:

-6

Therefore, when n = 1.2 and m = -6, the expression 5(n + 2m) - 4(2m - 3) - 12 evaluates to -6.