Question

Раскрыть скобки. а) - (4х-5) = -4х+5;б) - (-2a+c) - (b-3d) = 2a-c-b+3d;в) - (4k-m) - (-a+2b) = -4k+m+a-2b.​

Answer 1

Ответ:

а)-(4x-5)=-4x+5;б)-(-2+c)-(b-3d)=2a+c-b+3d;в)-(4k-m)-(-a+2b)=-4k+m+a-2b

Answer 2

a) - (4x - 5) = -4x + 5

To expand the expression, distribute the negative sign to both terms within the parentheses:

-4x + 5

b) - (-2a + c) - (b - 3d) = 2a - c - b + 3d

First, let's deal with the first set of parentheses:

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

Then, expand the second set of parentheses:

• (b - 3d) = -b + 3d

Now combine both results:

2a - c - b + 3d

c) - (4k - m) - (-a + 2b) = -4k + m + a - 2b

First, expand the first set of parentheses:

• (4k - m) = -4k + m

Then, expand the second set of parentheses:

• (-a + 2b) = a - 2b

Now combine both results:

-4k + m + a - 2b