how to solve by elimination method

Solve: 3x - 4y = 20 (i) 5x + 6y = 8 (ii) Multiply (i) by 3 and (ii) by 2: Adding the two, 19x = 76 Substituting x = 4 in (ii), we get 5(4) + 6y = 8 6y = 8 - 20 6y = -12 y = -2 The solution is x = 4 and y = -2..

Method of Elimination - Solve: 3x - 4y = 20 (i) 5x + 6y = 8 (ii) Multiply (i) by 3 and (ii) by 2: Adding the two, 19x = 76 Substituting x = 4 in (ii), we get 5(4) + 6y = 8 6y = 8 - 20 6y = -12 y = ..

There are four methods of solving quadratic equations. i) By factorization ii) By completing the squares iii) By using the formula iv) By graphi..

Suppose the LPP is to Optimize Z = ax + by subject to the constraints This method of optimization involves the following method..

a cos q + b sin q = c -----(i) (i) can be written as or a (1- t 2 ) + 2bt - c (1+t 2 ) = 0 This is a quadratic in 't' and can be solved...

Use the elimination method to solve the linear system. 6 x + 5 y = 49 5 y = 41 - 4 x => (4, 5) or (- 4, - 5) or (- 4, 5) or (4, - 5)..

Solve the system of equations using Gausssian elimination method. x + y = z 7 x - z = y - y = z => (8, 0, 7) or (1, 1, 7) or (7, 1, 8) or (0, 0, 0)..

Use Elimination method to solve the system. x - 42 y = 84 y + z = 7 8 x - z = 328 => (7, - 1, 8) or (42, - 1, 8) or (42, 8, 7) or (8, - 1, 42)..

Use Elimination method to solve the system. 11 x - y = 11 y - z = 11 x + 12 z = 2 => (2, 10, 0) or (0, 11, 0) or (22, 144, - 133) or (2, 11, 0)..

Solve the system of equations using Gaussian elimination method: 2 x - y = 10, x - z = - 1, and y + z = - 9 => x = 1, y = -10, z = 1 or x = 0, y = -10, z = 1 or x = 0, y = 10, z = 1 or x = 1, y = -10, z = -1..