Question 176001
x+y=47....eq 1
x-y=7.....eq 2
:
rewrite eq 1 to y=47-x and plug that into eq 2
:
x-(47-x)=7
:
x-47+x=7
:
2x=54
:
{{{highlight(x=27)}}}
:
{{{highlight(y=47-27)=20}}}