Question

Раскройте скобки и приведите подобные слагаемые: a) (8a+b)-6a-2a b) (8x - 0,5) - (0,5x-8) c) 4-3*(x-2)-x

Answer 1

A) 8a+b-6a-2a=b;
b) 8x-0,5-0,5x+8=7,5x+7,5;
c) 4-3x+6-x=10-4x.

Answer 2

a) (8a + b) - 6a - 2a

To simplify, combine like terms:

First, combine the 'a' terms: 8a - 6a - 2a = (8 - 6 - 2)a = 0a = 0.

Now, the expression becomes:

(8a + b) - 6a - 2a = (8a + b) + 0 = 8a + b.

b) (8x - 0.5) - (0.5x - 8)

To simplify, first remove the parentheses, and then combine like terms:

8x - 0.5 - 0.5x + 8

Combine 'x' terms: 8x - 0.5x = (8 - 0.5)x = 7.5x.

Now, the expression becomes:

7.5x + 8 - 0.5 = 7.5x + 7.5.

c) 4 - 3 * (x - 2) - x

To simplify, apply the distributive property and then combine like terms:

4 - 3x + 6 - x

Combine 'x' terms: -3x - x = (-3 - 1)x = -4x.

Now, the expression becomes:

4 + 6 - 4x = 10 - 4x.

So the simplified expressions are:

a) 8a + b b) 7.5x + 7.5 c) 10 - 4x