Question 414166


{{{9x+8y=-23}}}........1..

{{{-4x+y=33}}}.........2...{{{y=4x+33}}}...plug in 1...


{{{9x+8(4x+33)=-23}}}........1..

{{{9x+32x+264=-23}}}

{{{41x =-23-264}}}

{{{41x =-287}}}

{{{41x =-7}}}

now find {{{y}}}

{{{y=4(-7)+33}}}

{{{y= -28+33}}}

{{{y=5}}}


check:


{{{9x+8y=-23}}}

{{{9(-7)+8(5)=-23}}}

{{{-63+40=-23}}}

{{{-23=-23}}}