Question

958. 1) -15 *37 + 14*37 - 19* 37 + 17* 37: 2) 26* 45 - 45*27 + 31 *45 - 30 - 45;3) 48 - 54:48 + 54* 48:(-54);4) 72*38: (-72) - 38 - 72:(-38).​

Answer 1

Ответ:

1) -111

2) 1275

3) -1,125

4) -74,10526315

Пошаговое объяснение:

Answer 2

Let's solve each expression step by step:

1. -15 * 37 + 14 * 37 - 19 * 37 + 17 * 37:

First, factor out the common term 37:

= (37 * (-15 + 14 - 19 + 17))

Now, perform the addition inside the parentheses:

= (37 * (-3))

Finally, multiply:

= -111

2. 26 * 45 - 45 * 27 + 31 * 45 - 30 - 45:

Multiply the numbers first:

= (1170 - 1215 + 1395 - 30 - 45)

Perform the subtraction:

= (1170 + 1395 - 1215 - 30 - 45)

= 1275

3. 48 - 54 : 48 + 54 * 48 : (-54):

Let's start with the division first:

= (48 - 54 / 48 + 54 * 48 / (-54))

Now, perform the division and multiplication:

= (48 - 1.125 + (-48))

Perform the addition and subtraction:

= (-0.125)

4. 72 * 38 : (-72) - 38 - 72 : (-38):

Again, start with the division:

= (72 * 38 / (-72) - 38 - 72 / (-38))

Now, perform the division:

= (-38 - 38 + 2)

Finally, perform the addition and subtraction:

= (-74)

So, the answers to the expressions are as follows:

1. -15 * 37 + 14 * 37 - 19 * 37 + 17 * 37 = -111
2. 26 * 45 - 45 * 27 + 31 * 45 - 30 - 45 = 1275
3. 48 - 54 : 48 + 54 * 48 : (-54) = -0.125
4. 72 * 38 : (-72) - 38 - 72 : (-38) = -74