Question 470828
{{{system{-0.04x+0.04y=0.03,-0.02x+0.04y=0.2)}}}
Subtract the first equation from the second
{{{-0.02x-(-0.04x)=0.2-0.03}}}
{{{0.02x=0.17}}} divide by 0.02
{{{x=0.17/0.02}}}
{{{x=17/2}}}
Put {{{x=17/2}}} into the first equation
{{{-0.04*(17/2)+0.04y=0.03}}}multiply both sides of equation by 100
{{{-4*(17/2)+4y=3}}}
{{{-34+4y=3}}}
{{{4y=3+34}}}
{{{4y=37}}} divide by 4
{{{y=37/4}}}
Answer e.(17/2,37/4)