Question 16293
Use same principle as before
4x+2y=7  ----(1)
y=5x     ----(2)
Sustitute value of y in (1) with value of y in(2)
4x+2(5x)=7
4x+10x=7
14x=7
{{{x=7/14=1/2=0.5}}}
Substitute this into (2) to find y
{{{y=5(0.5)}}}
y=2.5
so x=0.5 and y=2.5 check by putting values into original equations
Pete