Solution of the following equation by the method of substitution is _________ .x - y = 12x - y + 6.
x = 4 , y = 5
x = 5, y = 4
x = 3 , y = 2
x = 6 , y = 7
The sum of a two digit number and the number obtained on reversing the digits is 165 .If the digits differ by 3,then the numbers are _______ .
69
65
67
89
Solution of x - 4y = 9, x - 7y = 18 by the method of substitution .
x=-3, y=-3
x = 3 , y = -3
x = 4 , y = 3
x = -4 , y = 5
If 5x + 3 = 18 ,then the value of x is __________ .
21/ 5
-21/5
3
-3
Solution of 3x - 4y = 10 and 5x - 3y = 24 is __________ .
x = 6, y = 2
x = 4 , y = 4
x = 5 , y = 7
x = 2 and y = 3
The difference between the ages of two girls is 5 years.Their total age is 19 years .Then their ages are ________ .
14 , 5
13 , 6
11,6
12 , 7
Solve 7/x + 8/y = 2 and 2/x +12/y = 20
x = 3/2 and y = 1/2
x = -1/2 and y = 1/2
x=5/4 and y = 1/3
x = 3/4 and y = 2/3
If 9 is subtracted from five times a number the answer is 21 .Then the number is ________ .
5
6
7
9
If I multiply a number by 4 and then add 8 the total is 32 .What is the number ?
4
8
none of these
Solve 2x - 8y = 2 2x - 4y = 6
x = 5 and y = 1
x = 1 and y = 5
x = 3 and y = 2
