solve given pair of equation 5x-6y=8 and 7y-15x=9
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The equations are:
(Solving by elimination method)
5x - 6y = 8 ------- (1) * 3
-15x + 7y = 9 ------(2) * 1
∴ 15x - 18y = 24
-15x + 7y = 9 Adding both the
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∴ -11y = 33
∴ y = -3
Putting y = -3 in equation (1)
∴5x -6*(-3) = 8
∴5x +18 = 8
∴5x = 8 - 18
∴5x = -10
∴x = -2
Thus. solution of pair of linear equations in two variables is (x,y) = (-2,-3)
(Solving by elimination method)
5x - 6y = 8 ------- (1) * 3
-15x + 7y = 9 ------(2) * 1
∴ 15x - 18y = 24
-15x + 7y = 9 Adding both the
__________________
∴ -11y = 33
∴ y = -3
Putting y = -3 in equation (1)
∴5x -6*(-3) = 8
∴5x +18 = 8
∴5x = 8 - 18
∴5x = -10
∴x = -2
Thus. solution of pair of linear equations in two variables is (x,y) = (-2,-3)
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Answered by
1
5x - 6y = 8 ..........(1) × 3
7y - 15x=9 ..........(2) × -1
solve the both equations
15x - 18y = 24
15x - 7y = -9
--------------------
-11y = 33
y = -3
substitute y value in eq(1)
5x + 18 =8
5x = -10
x = -10
7y - 15x=9 ..........(2) × -1
solve the both equations
15x - 18y = 24
15x - 7y = -9
--------------------
-11y = 33
y = -3
substitute y value in eq(1)
5x + 18 =8
5x = -10
x = -10
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