To eliminate x, from $3 x + y = 7$ and $- x + 2 y = 2$ second equation is multiplied by ______

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Solution

The correct option is B $3$
$b y m u l t i p l y i n g s e c o n d e q u a t i o n w i t h 3, w e g e t - 3 x + 6 y = 6 n o w b y a d d i n g i t w i t h e q u a t i o n 3 x + y = 7, v a l u e s o f u n k n o w n s c a n b e c a l c u l a t e d$

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To eliminate x, from 3x+y=7 and −x+2y=2 second equation is multiplied by ______

The correct option is B 3bymultiplyingsecondequationwith3,weget−3x+6y=6nowbyaddingitwithequation3x+y=7,valuesofunknownscanbecalculated

To eliminate x, from $3 x + y = 7$ and $- x + 2 y = 2$ second equation is multiplied by ______

The correct option is B $3$
$b y m u l t i p l y i n g s e c o n d e q u a t i o n w i t h 3, w e g e t - 3 x + 6 y = 6 n o w b y a d d i n g i t w i t h e q u a t i o n 3 x + y = 7, v a l u e s o f u n k n o w n s c a n b e c a l c u l a t e d$