Question 102783
Let's focus on the first equation: {{{.18x + .27y =  .09}}}



{{{100(.18x + .27y) =  100(.09)}}} Multiply both sides by 100 to move the decimal 2 places to the right. This will make every number a whole number


{{{18x + 27y =  9}}} Distribute and multiply


So our first equation is now 

Equation 1: {{{18x + 27y =  9}}}



Now let's focus on the second equation: {{{.06x - .54y = -.04}}}



{{{100(.06x - .54y) =  100(-.04)}}} Multiply both sides by 100 to move the decimal 2 places to the right. This will make every number a whole number


{{{6x - 54y =  -4}}} Distribute and multiply


So our second equation is now 

Equation 2: {{{6x - 54y =  -4}}}



Now let's solve the new system of equations



{{{18x + 27y =  9}}}

{{{6x - 54y =  -4}}}



*[invoke solving_linear_system_by_elimination 18, 27, 9, 6, -54, -4]