Question

3 2 6х +8х-5-(4х+8х-5)= 4 3 4 3z-2z+12z-5-(3z-2z-5)=

Answer 1

$6x + 8x - 5 - (4x + 8x - 5) = \\ = 6x + 8x - 5 - 4x - 8x + 5 = \\ = 2x$
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$3z - 2z + 12z - 5 - (3z - 2z - 5) = \\ =3 z - 2z + 12z - 5 - 3z + 2z + 5 = \\ = 12z$

Answer 2

Let's simplify the given expressions step by step:

1. 3(2x) + 8x - 5 - (4x + 8x - 5)

First, distribute the 3 to (2x) and then combine like terms inside the parentheses:

= 6x + 8x - 5 - (4x + 8x - 5)

Now, remove the parentheses and combine like terms:

= 6x + 8x - 5 - 4x - 8x + 5

Next, combine like terms:

= (6x + 8x - 4x) + (8x - 8x) - 5 + 5

= 10x + 0 - 0

= 10x

So, the simplified expression is 10x.

2. 4(3z) - 2z + 12z - 5 - (3z - 2z - 5)

First, distribute the 4 to (3z) and then combine like terms inside the parentheses:

= 12z - 2z + 12z - 5 - (3z - 2z - 5)

Now, remove the parentheses and combine like terms:

= 12z - 2z + 12z - 5 - 3z + 2z + 5

Next, combine like terms:

= (12z + 12z - 3z) + (-2z + 2z) - 5 + 5

= 21z + 0 - 0

= 21z

So, the simplified expression is 21z.