Question

2x + y=6 ; 2x-y=20 ?
pls ans me.... step by step ​

Answer 1

$\huge\mathcal{\purple{A}}{\mathcal{\green{N}}}{\mathtt{\pink{S}}}{\mathcal{\blue{W}}}{\mathcal{\purple{E}}}{\mathcal{\green{R}}}{\pink{!}}{\blue{!}}$

2x + y=6 ----------- (i)

2x-y=20 ------------ (ii)

Adding equation (i) and (ii)

2x + y + 2x - y = 6 + 20

=> 4x = 26

=> x = 26/4 = 13/2

Putting x = 13/2 in eqn (i)

2x + y = 6

=> 2(13/2) + y = 6

=> 13 + y = 6

=> y = - 7