Question

x-y=5; 3x+2y=25 in elimination method

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Answer 1

by elimination method,

let,

x-y=5 ---(1)

3x+2y=25 ---(2)

multiplying (1) from 3,

3x-3y=15 ---(3)

subtracting (3) from (2),

3x + 2y = 25

(-)3x - 3y = 15

(-) (+) (-)

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0 + 5y = 10 ---(4)

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from (4)

y=10/5

y=2

so, from (1),

x=y+5

x=2+5

x=7

so,

x=7 and y=2

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