There is no sequence of adds or subtracts of 5, 6, 8, 9, and 10 that sum to 1. Check it with this C++ code...
for (int i=0; i<32; ++i) {
int sum = 0;
if (i&1) sum += 5; else sum -= 5;
if (i&2) sum += 6; else sum -= 6;
if (i&4) sum += 8; else sum -= 8;
if (i&8) sum += 9; else sum -= 9;
if (i&16) sum += 10; else sum -= 10;
cout << i << " " << sum << endl;
}
to add a fraction, get a common denominator, then add the numerators. example: 2/10+4/5 first get common denominators 2/10+8/10 then add the numerators 10/10 (simplify) 1 to subtract from a fraction, get common denominator, then subtract the numerators. example: 4/5-2/10 first get common denominators 8/10-2/10 then subtract the numerators 6/10 (simplify) 3/5
add 9 plus 5 than subtract 1 from 5 to add it to 9 will give you 10
That depends what the question is. Do you want to add, subtract, multiply, divide, compare, or what?
18. The pattern is add 5, then subtract 1.
1/10 + 1/5 =3/10. This is because, to add or subtract fractions, you must get them to have a common denominator. You can then convert 1/5 to 2/10 so that it shares a common denominator with the fraction 1/10. You then add the numerators, and 1+2=3, therefore your sum of the two fractions is 3/10, or 3 over 10.
-4
1. Subtract 25 2. Then subtract 6 3. Then subtract 12 4. Then subtract 2 5. Then subtract 10 6. Then subtract 15 7. Then subtract 7 8. Then add 3 X 1/2 9. Then add 8
40 + 3 50 - 7 43 x 1
-1/2+7/10
Numerators
DCI is 601. D = 500, C = 100, and I = 1, so 500 + 100 + 1 = 601.Now subtract 10 [X means 10], so 601- 10 = 591.So 500 = D, and then add 91. So 91 = 90 + 1. To get 90, do XC [100 - 10], then add 1 for XCI, so it is DXCI.
Any number can be an arithmetic mean. SO just pick any three numbers between -2 and 12. And if you want to find a set of numbers for which your selected number is a mean add 1 and subtract 1 from it, or add 2 and subtract 2 from it (or do both). Suppose you pick 8. Add 1 and subtract 1: 7 and 9. 8 IS the arithmetic mean of 7 and 9. Add 2 and subtract 2: 6 and 10. 8 is the arithmetic mean of 6 and 10. It is also the AM of 6, 7, 9 and 10.
70 x 10 - 70 + 1 = 631
Subtract the numerator Subtract or add the numerator Subtract or add the numerator ex: 3/4-1/4=2/4 or 1/2 ex: 5/8 + 1/8= 6/8 or 3/4
to add a fraction, get a common denominator, then add the numerators. example: 2/10+4/5 first get common denominators 2/10+8/10 then add the numerators 10/10 (simplify) 1 to subtract from a fraction, get common denominator, then subtract the numerators. example: 4/5-2/10 first get common denominators 8/10-2/10 then subtract the numerators 6/10 (simplify) 3/5
add 9 plus 5 than subtract 1 from 5 to add it to 9 will give you 10
To add/subtract fractions, the denominators (bottom numbers) must be equal; so first convert the fractions into equivalent fractions with the same denominator. Then the numerators (top numbers) are added/subtracted and the resulting fraction simplified: 1/10 + 1/2 = 1/10 + (1×5)/(2×5) = 1/10 + 5/10 = 6/10 = (3×2)/(5×2) = 3/5