Question

a) (450+50*1,5)-(190+70*1,5)=230 b) (450+50*10)-(190+70*10)=60 c) (450+50*16)-(190+70*16)=-60 (450+50*19)-(190+70*19)=-120 d)​

Answer 1

Ответ:

b ответ бэээ

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Answer 2

To solve the given expressions, let's break down each step:

a) (450 + 50 * 1.5) - (190 + 70 * 1.5) = 230

First, we calculate the multiplication and addition inside the parentheses:

450 + 50 * 1.5 = 450 + 75 = 525 190 + 70 * 1.5 = 190 + 105 = 295

Now, we substitute these values back into the original expression:

525 - 295 = 230

So, the value of expression (a) is 230.

b) (450 + 50 * 10) - (190 + 70 * 10) = 60

Following the same steps as before:

450 + 50 * 10 = 450 + 500 = 950 190 + 70 * 10 = 190 + 700 = 890

Now, substituting these values back:

950 - 890 = 60

So, the value of expression (b) is 60.

c) (450 + 50 * 16) - (190 + 70 * 16) = -60

Again, following the same steps:

450 + 50 * 16 = 450 + 800 = 1250 190 + 70 * 16 = 190 + 1120 = 1310

Now, substituting these values back:

1250 - 1310 = -60

So, the value of expression (c) is -60.

d) (450 + 50 * 19) - (190 + 70 * 19) = -120

Once again, following the same steps:

450 + 50 * 19 = 450 + 950 = 1400 190 + 70 * 19 = 190 + 1330 = 1520

Now, substituting these values back:

1400 - 1520 = -120

So, the value of expression (d) is -120.

To summarize: a) 230 b) 60 c) -60 d) -120