Question 334716
{{{4x+3y=7}}}
{{{2x-y=1}}}
y=2x-1 
replace y in the first equation by (2x-1) & solve for x.
4x+3(2x-1)=7
4x+6x-3=7
10x=7+3
10x=10
x=1 ans.
y=2*1-1
y=2-1
y=1 ans.
Proof:
4*1+3*1=7
4+3=7
7=7