Question

Q-Make Constant same by multiplying equation.
(a) x + y = 15
x - y = 3
(b) x + y = 0
x - y = 2
(c) 2x - y = 3
4x + y = 3
(d) 2x - 9y = 9
5x + 2y = 27
(e) x + 4y = -4
3y - 5x = -1
(f) 2x - 3y = 2
x + 2y = 8
(g) x + y = 7
2x - 3y = 9
(h) 11y + 15x = -23
7y - 2x = 20
(i) 5x - 6y = 2
6x - 5y = 9
Please tell me ans. its urgent
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Answer 1

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(a) x + y = 15

$\:\:\:$ x - y = 3

$\mathfrak { x+y=15------×1}$

$\mathfrak { x-y=3--------×5}$

$\mathfrak { x+y=15}$

$\mathfrak { 5x-5y=15}$

(b) x + y = 0

$\:\:\:$x - y = 2

$\mathfrak { x+y=0---------×1}$

$\mathfrak { x-y=2---------×0}$

$\mathfrak { x+y=0}$

$\mathfrak { 0x-0y=0}$

$\mathfrak { x+y=0}$

$\mathfrak { 0=0}$

(c) 2x - y = 3

$\:\:\:$4x + y = 3

$\mathfrak { 2x - y = 3 }$

$\mathfrak { 4x + y = 3 }$

In this equation the constant are same

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