Question

Расставьте скобки так, чтобы равенства были верными 90:9-4*2=12 250: 250:10+40*6=1 250:10+40*6=30 250:10+40*6=390 90:9-4*2=36 90:9-4*2=90

Answer 1

(90:9-4)*2=12
250:(10+40*6)=1
250:(10+40)*6=30
(250:10+40)*6=390
90:(9-4)*2=36
90:(9-4*2)=90

Answer 2

1) 90:9-(4*2)=12
2) 250:(10+(40*6))=1
3) 250:(10+40)*6=30
4) ((250:10)+40)*6=390
5) 90:(9-4)*2=36
6)90:(9-(4*2))=90

Answer 3

Расставим скобки в данном выражении так, чтобы равенства были верными:

1. 90:9-4*2 = (90:9)-(4*2) = 10-8 = 2 2. 12+250:10+40*6 = 12+(250:10)+(40*6) = 12+25+240 = 277 3. 1+250:10+40*6 = 1+(250:10)+(40*6) = 1+25+240 = 266 4. 30+250:10+40*6 = 30+(250:10)+(40*6) = 30+25+240 = 295 5. 390+90:9-4*2 = (390+90:9)-(4*2) = (390+10)-(4*2) = 400-8 = 392 6. 90:9-4*2 = (90:9)-(4*2) = 10-8 = 2

ТакTo solve the equation and make the equations true, we need to follow the order of operations (PEMDAS/BODMAS) and perform the calculations within the parentheses first, then the multiplication and division from left to right, and finally the addition and subtraction from left to right.

Let's break down the equation step by step:

1. 90:9-4*2 - First, we perform the multiplication: 4 * 2 = 8. - Then, we perform the division: 90 : 9 = 10. - Finally, we perform the subtraction: 10 - 8 = 2.

So, 90:9-4*2 = 2.

2. 12 + 250 : 250 : 10 - First, we perform the division: 250 : 250 = 1. - Then, we perform the division again: 1 : 10 = 0.1. - Finally, we perform the addition: 12 + 0.1 = 12.1.

So, 12 + 250 : 250 : 10 = 12.1.

3. 40 * 6 = 1 + 250 : 10 - First, we perform the multiplication: 40 * 6 = 240. - Then, we perform the division: 250 : 10 = 25. - Finally, we perform the addition: 1 + 25 = 26.

So, 40 * 6 = 1 + 250 : 10 = 26.

4. 30 + 250 : 10 + 40 * 6 - First, we perform the multiplication: 40 * 6 = 240. - Then, we perform the division: 250 : 10 = 25. - Finally, we perform the addition: 30 + 25 + 240 = 295.

So, 30 + 250 : 10 + 40 * 6 = 295.

5. 390 + 90 : 9 - 4 * 2 - First, we perform the multiplication: 4 * 2 = 8. - Then, we perform the division: 90 : 9 = 10. - Finally, we perform the addition: 390 + 10 - 8 = 392.

So, 390 + 90 : 9 - 4 * 2 = 392.

6. 90 : 9 - 4 * 2 = 36 + 90 : 9 - 4 * 2 = 90 - First, we perform the multiplication: 4 * 2 = 8. - Then, we perform the division: 90 : 9 = 10. - Finally, we perform the subtraction: 10 - 8 = 2.

So, 90 : 9 - 4 * 2 = 36 + 90 : 9 - 4 * 2 = 90.

Therefore, the correct arrangement of parentheses to make the equations true is:

90 : (9 - 4 * 2) = 12 + (250 : (250 : 10)) + (40 * 6) = 1 + (250 : (10 + (40 * 6))) = 30 + (250 : (10 + (40 * 6))) = 390 + (90 : (9 - 4 * 2)) = 90.