The following shows how this can be achieved:
typedef struct fraction {
int n; // numerator
int d; // denominator
};
struct fraction subtract (struct fraction a, struct fraction b) {
struct fraction r; // result
r.d = lcm (a.d, b.d); // lowest common multiple
r.n = (a.n * (r.d/a.d)) - (b.n * (r.d/b.d));
return r;
}
The lcm() function has the following definition:
int lcm (int a, int b)
{
int sign = 1;
if (a<0) a*=-1, sign *=(-1);
if (b<0) b*=-1, sign *=(-1);
return (a*b) / gcd (a,b) * sign;
}
The gcd() function (greatest common divisor) has the following definition:
int gcd (int a, int b)
{ int sign = 1;
if (a<0) a*=-1, sign *=(-1);
if (b<0) b*=-1, sign *=(-1);
while (a!=b)
a>b?a-=b:b-=a;
return a * sign;
}
The 8051 is a microcontroller, not a microprocessor. To add or subtract, use the ADD or SUBB opcodes.
A computer algorithm is any set of instructions that a computer could use to produce a result. An example would be "given a numeric input, multiply that value by 9, divide the result by 5, then add 32." This is how a Celsius temperature is converted into Fahrenheit.
x -=y;
The first thing to remember is that a BCD digit is only 4 bits (a nibble). Secondly BCD is a base 10 system so the largest number for each digit is 9 but a nibble can have a value of up to 15. Thirdly, after each addition the resulting value has to be normalized. Here is the rule. If the resulting value is grater than 9, subtract 10 and also carry 1. Programming this is your job.
Subtract the estimated weight of fuel and passangers from the vehicle's rating.
First you would want to change the mixed number to an improper fraction. Then you can subtract
Change the whole number into an improper fraction with the same denominator as the fraction and then subtract accordingly
Turn the proper fraction into an improper fraction.
You convert the mixed numeral into an improper fraction. Now subtract the improper fraction from the whole number by putting the whole number over 1.
Express the mixed fraction as an improper fraction and then proceed as you would with ordinary fractions. If the answer is an improper fraction, then remember to convert to a mixed fraction.
u just bfffl
Make it into an both numbers an improper fraction and then do the opperation.
8/9 - 4/7 = 4/2 which is a improper fraction.
First, turn the fraction into a improper fraction. Then find a common denominator between the two numbers. After this, subtract strait across, but leave the denominator the same.
You need common denominators. Then add or subtract the numerators. If the answer is an improper fraction it is common practice to reduce it to a mixed number.
Make them into improper fractions, find the least common denominator, convert them, subtract, reduce if possible.
You change the mixed fraction to an improper fraction . Then you find the denominators GCF. Then you subtract. Another reply: Converting to an improper fraction is not really necessary, but converting to a common denominator is. Example: 3 1/2 - 1 1/3 = 3 3/6 - 1 2/6 = 2 1/6. In other words, you can subtract the integer part and the fraction part separately.