Question

do by elimination method
x+2y-3=0
3x-2y+7=0​

Answer 1

Step-by-step explanation:

x + 2y - 3 = 0.....(1)

3x + 2y + 7 = 0.....(2)

Subtract eqn.(2) from eqn.(1)

x + 2y - 3 = 0

3x + 2y + 7 = 0

Signs will be changed

=> -3x -2y -7 = 0

2y and -2y will be cancelled

so, required equation would be

-2x - 10 = 0

-2x = 10

x = -5

put x = -5 in eqn.(1)

-5 + 2y -3 = 0

-8 + 2y = 0

2y = 8

y = 4

Therefore, x = -5 and y = 4 is the required solution

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