Question

89. a) (701 960 – 69 859) . 8 + 18 720 : 78;б) 17544:(120-7*11) -408;в) (304*109+304*192-1200):4500​

Answer 1

Ответ:

Пошаговое объяснение:

а)701960-69859=632101

18720:78=240

632101*8=5056808

5056808+240

б)7*11=77

120-77=43

17544:43=408

408-408=0

в)304*109=33136

304*191=58064

58064+33136=91200

91200-1200=90000

90000:4500=20

Answer 2

Let's solve each of the given expressions step by step:

a) (701,960 - 69,859) * 8 + 18,720 / 78

First, perform the subtraction inside the parentheses:

= 632,101 * 8 + 18,720 / 78

Next, perform the division:

= 632,101 * 8 + 240

Then, perform the multiplication:

= 5,056,808 + 240

Finally, perform the addition:

= 5,057,048

Therefore, the value of expression a) is 5,057,048.

b) 17,544 : (120 - 7 * 11) - 408

First, calculate the value inside the parentheses:

= 120 - 7 * 11 = 120 - 77 = 43

Next, perform the division:

= 17,544 : 43 - 408

Then, perform the division:

= 408 - 408

Finally, perform the subtraction:

= 0

Therefore, the value of expression b) is 0.

c) (304 * 109 + 304 * 192 - 1,200) : 4,500

First, calculate the multiplication inside the parentheses:

= (304 * 109 + 304 * 192 - 1,200) : 4,500 = (33,136 + 58,368 - 1,200) : 4,500 = 90,304 : 4,500

Next, perform the division:

= 20.0675555556

Therefore, the value of expression c) is approximately 20.0676 (rounded to four decimal places).

To summarize: a) (701,960 - 69,859) * 8 + 18,720 / 78 = 5,057,048 b) 17,544 : (120 - 7 * 11) - 408 = 0 c) (304 * 109 + 304 * 192 - 1,200) : 4,500 ≈ 20.0676