Question

3(a-2b)= -2(3m-5n+4p)= (x-7y-3z) (-0.4)= a-(b-a)= -(m-n)-n= c+(-c+d)=

Answer 1

3(a-2b)=3а-6b

-2(3m-5n+4p)=-6m+10n-8p

(x-7y-3z) (-0.4)=-0,4x+2,8y+1,2z

  a-(b-a)=a-b+a=2a-b

-(m-n)-n=-m+n-n=-m

c+(-c+d)=c-c+d=d

Answer 2

1) 3а-6b
2) -6m+10n-8p
3) -0.4x+2.8y+1.2z
4) b
5) m
6) d

Answer 3

Let's simplify each expression step by step:

1. $3(a - 2b)$: Distribute the 3 to both terms inside the parentheses. $3a - 6b$

2. $-2(3m - 5n + 4p)$: Distribute the -2 to each term inside the parentheses. $-6m + 10n - 8p$

3. $(x - 7y - 3z)(-0.4)$: Distribute -0.4 to each term inside the parentheses. $-0.4x + 2.8y + 1.2z$

4. $a - (b - a)$: Distribute the negative sign inside the parentheses. $a - b + a$ Combine like terms. $2a - b$

5. $-(m - n) - n$: Distribute the negative sign inside the parentheses. $-m + n - n$ Combine like terms. $-m - n$

6. $c + (-c + d)$: Combine like terms. $d$

Putting it all together:

$3(a - 2b) - 2(3m - 5n + 4p) - (x - 7y - 3z)(-0.4) - (a - (b - a)) - (-(m - n) - n) + (c + (-c + d))$

$= (3a - 6b) - (6m - 10n + 8p) - (-0.4x + 2.8y + 1.2z) - (2a - b) - (-m - n) + d$

Combine like terms:

$= 3a - 6b - 6m + 10n - 8p + 0.4x - 2.8y - 1.2z - 2a + b + m + n + d$

Combine like terms further:

$= a - 4b - 5m + 11n - 8p + 0.4x - 2.8y - 1.2z + d$

So, the simplified expression is $a - 4b - 5m + 11n - 8p + 0.4x - 2.8y - 1.2z + d$.