Question

M-4n/m-3+5m-2n/3-m+8m-4n/2m-6 упрастить выражение и найти его значение если m=0,5; n=-2​

Answer 1

Ответ:

3,2

Объяснение:

(m-4n)/(m-3) +(5m-2n)/(3-m) +(8m-4n)/(2m-6)=(2(m-4n)+2(2n-5m)+8m-4n)/(2(m-3))=(2m-10m+8m-8n+4n-4n)/(2(m-3))= -8n/(2(m-3))= -4n/(m-3)=(-4×2)/(0,5-3)= -8/(-2,5)=3,2

Answer 2

To simplify the expression and find its value for the given values of m and n, let's start by combining like terms:

M = (4n/m) - (3 + 5m) - (2n/3) - (m + 8m) - (4n/2m) - 6

Now, let's combine the like terms:

M = (4n/m) - (6m + 3) - (2n/3) - (9m) - (2n/m) - 6

Next, let's substitute the values m=0.5 and n=-2 into the expression:

M = (4(-2)/0.5) - (6(0.5) + 3) - (2(-2)/3) - (9(0.5)) - (2(-2)/0.5) - 6

Now, calculate the expression:

M = (-8/0.5) - (3 + 3) - (-4/3) - 4.5 - (-4) - 6 M = -16 - 6 - (-4/3) - 4.5 + 4 - 6 M = -22 - (4/3) - 0.5 M = -22 - 1.333 - 0.5 M = -23.833

So, the value of the expression when m=0.5 and n=-2 is approximately -23.833.