Question 177559
x+y=10......eq 1
y=4x........eq 2
:
take y's value of 4x from eq 2 and plug it into eq 1.
:
x+(4x)=10
:
5x=10
:
{{{highlight(x=2)}}}
:
now take x's found value and plug it back into either eq 1 or 2. I choose eq 2
:
{{{highlight(y=4(2)=8)}}}