Advertisements
Advertisements
प्रश्न
Solve the following systems of equations:
152x − 378y = −74
−378x + 152y = −604
उत्तर
152x − 378y = −74 ...(1)
−378x + 152y = −604 ...(2)
Adding the equations (1) and (2), we obtain:
-226x - 226uy = -678
=> x + y = 3 ...(3)
Subtracting the equation (2) from equation (1), we obtain
530x - 530y = 530
=> x - y = 1 ...(4)
Adding equations (3) and (4), we obtain:
2x = 4
x = 2
Substituting the value of x in equation (3), we obtain:
y = 1
APPEARS IN
संबंधित प्रश्न
A three digit number is equal to 17 times the sum of its digits. If 198 is added to the number, the digits are interchanged. The addition of first and third digit is 1 less than middle digit. Find the number.
Solve the following pair of linear equations by the substitution method.
`(3x)/2 - (5y)/3 = -2`
`x/y+y/2 = 13/6`
Solve the following systems of equations:
11x + 15y + 23 = 0
7x – 2y – 20 = 0
Solve the following systems of equations:
99x + 101y = 499
101x + 99y = 501
Solve the following systems of equations:
23x − 29y = 98
29x − 23y = 110
Solve the following systems of equations:
x − y + z = 4
x − 2y − 2z = 9
2x + y + 3z = 1
Solve the following set of simultaneous equation.
x + y = 4 ; 2x - 5y = 1
Find the solution of the pair of the equation :
`3/x + 8/y = - 1; 1/x - 2/y = 2`, x, y ≠ 0
Complete the table to draw the graph of 2x – 3y = 3,
| x | − 6 | `square` |
| y | `square` | 1 |
| (x, y) | `square` | `square` |
The coach of a cricket team buys 4 bats and 1 ball for ₹ 2050. Later, she buys 3 bats and 2 balls for ₹ 1600. Find the cost of each bat and each ball.
