Ответ:

1)

[tex]x - (a - b) + (c - d) = \\ = x - a + b + c - d[/tex]

2)

[tex] - c - ( - a + b) = \\ = - c + a - b = \\ = a - b - c[/tex]

3)

[tex](96f + 56l - 18) \times 2a = \\ = 192af + 112al - 36a[/tex]

4)

[tex](96f + 56l - 18) \div 2a = \\ = \frac{48f}{a} + \frac{28l}{a} - \frac{9}{a} [/tex]

Ответ:

Объяснение:

1. х-(а-b)+(с-d)=x-a+b+c-d

2. -c-(-a+b)=-c+a-b

3. (96f+56L-18)*2a=

=2a*96f+56L*2a-18*2a=

=192af+112La-36a

4. (96f+56L-18):2a=

=96f:2a+56L:2a-18:2a=

=48fa+27La-9a