Question

1,25с + 2с + (−0,85с) − (−3с) – 3с

Answer 1

Ответ:

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1,25c + 2c + (-0,85c) - (-3c) - 3c = 3,25c+(-0,85c)+3c-3c = 3,25c-0,85c = 2,4c.

Answer 2

1,25с + 2с + (−0,85с) − (−3с) – 3с

1,25c + 2c - 0,85c + 3c - 3c

1,25c - 0,85c + 2c

0,4c + 2c

2,4c

Ответ: 2,4с

Answer 3

Let's simplify the expression step by step:

1.25c + 2c + (-0.85c) - (-3c) - 3c

First, let's combine like terms:

(1.25c + 2c) represents the sum of 1.25c and 2c, which is 3.25c.

(-0.85c) is already a single term.

(-(-3c)) is the same as adding 3c because a double negative cancels out, so it's just 3c.

Now, we can rewrite the expression:

3.25c + (-0.85c) + 3c - 3c

Now, combine like terms:

(3.25c - 0.85c) represents the difference between 3.25c and 0.85c, which is 2.4c.

(3c - 3c) represents the difference between 3c and 3c, which is 0.

So, the simplified expression is:

2.4c + 0

Since adding 0 to any value doesn't change that value, the final result is:

2.4c