Question

3x +4y =4 ;2x - 4y = 1

Answer 1

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Answer 2

QUESTION

3x +4y =4 ;2x - 4y = 1

step by step

$4x + 3y = 4 \: \: \: \: \: \: ...{.1 }$

$4x - 2y = 1 \: \: \: ...2$

subtracting 1 & 2

( 4x - 2y + 4 ) - ( 4x + 3y - 16 ) = 0

4x - 2y + 4 - 4x - 3y + 16 =0

-5y + 20 = 0

$- 5y = - 20$

$y = \frac{ - 20}{ - 5}$

$y = 4$

Putting y = 4 in equation 1

$4x - 2(4) = - 4$

$4x - 8 = 4$

$4x = - 4$

$x = \frac{ - 4}{4}$

$x = - 1$

Answer

$x = 1$

$y = 4$