Express the following statements in the form of simultaneous linear equations :
The sum of two different numbers is 80 and 3 times of the difference of the two numbers is 20 more than the greater one.

Express the following statements in the form of simultaneous linear equations and solve them by drawing graphs : (i) The sum of two numbers is 12 and their difference is 4. Find the numbers.

(xvii) Express the following statements in the form of simultaneous linear equations : (b) The one's unit digit of a two-digit number is twice of it's ten's unit digit. The number obtained by reversing the digits of the number is 18 more than the original number.

The sum of two numbers is equal to 80. Three times of the difference of them is 20 more than the greatest number. Find the two numbers.

Express the following statements in the form of simultaneous linear equations : (iv) The tens' digit of a number of two digits is double of its unit's digit. The number, obtained by reversing the two digits of the number, is 27 less than the original number.

Express the following statements as a linear equation in two variables. The sum of two numbers is 34.

If the sum of two number is 89 and their difference is 15, let's find the two numbers.

Express the following statements in the form of a linear equations of two variables and draw the graph of them : (i) The sum of two numbers is 15.

Express the following statements in the form of simultaneous linear equations and solve them by drawing graphs : (ii) At present the age of a father is 28 years more than that of his son. After 10 years the age of father will be 3 times of the age of his son. Find the present ages of both father and son.

Express the following statements in the form of simultaneous linear equations and solve them by drawing graphs : (iii) If 3 is subtracted from the numerator and 2 is added to the denominator of a fraction it becomes (1)/(3) . Again, if 4 is substracted from the numberator and 2 is subtracted form the denominator of the same fraction, it becomes (1)/(2) . Determine the fraction.