Solve by substitution method.
2x/a + y/b = 2
x/a - y/b = 4
Solve by elimination method
8x + 5y = 9
3x + 2y = 4

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Solution

By elimination method :
8x+5y = 9---------(1) ×2
3x+2y = 4 -----(2). ×5
we get,
16x+10y = 18
15x+10y= 20
subtracting both the equations we get;
x = -2
Putting the value of x in (1)...
8×-2 +5y = 9
-16+5y = 9
5y = 9+16
5y = 25
y = 25/5
y = 5

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Similar questions

Solve the following pair of linear equations by the elimination method and the substitution method :

(i) x+y=5 and 2x−3y=4
(ii) 3x+4y=10 and 2x−2y=2
(iii) 3x−5y−4=0 and 9x=2y+7
(iv) x2+2y3=−1 and x−y3=3

x + y = 5

2 x - 3 y = 4

Solve using cross multiplication method:-

8x+5y=9

3x+2y=4

2 x + y - 5 = 0, 3 x - 2 y - 4 = 0

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