Question

6x-5y=-2 and 5x-6y=-9.solve the equation by substitution method.

Answer 1

Heya!!!!
6x-5y = -2 ---------(i)
5x- 6y = -9--------(ii)
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USING SUBSTITUTION METHOD:
From equation (i)
6x-5y= -2
x = -2+5y/6-----(iii)

Putting x = -2+5y/6 in equation (ii).
5x-6y = -9
5(-2+5y/6) -6y = -9
-10+25y-36y = -54
-11y = -54+10
-11y = -44
y = 4
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Putting y = 4 in eq.(iii)
x = -2+5y/6
x = -2+5(4)/6
x = -2+20/6
x = 18/6
x = 3
So , x = 3 & y = 4
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Answer 2

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