SOLUTION: how do i solve the equation x(159)+y(3.3)=1000 and x(2.3)+y(0.3)=18

Algebra ->  Linear-equations -> SOLUTION: how do i solve the equation x(159)+y(3.3)=1000 and x(2.3)+y(0.3)=18      Log On


   

Question 743109: how do i solve the equation x(159)+y(3.3)=1000 and x(2.3)+y(0.3)=18
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
x%28159%29%2By%283.3%29=1000....eq.1 and
x%282.3%29%2By%280.3%29=18....eq.2
______________________________
start with
x%282.3%29%2By%280.3%29=18....eq.2 and solve for y
y%280.3%29=18-x%282.3%29
y=18%2F%280.3%29-x%282.3%29%2F%280.3%29
y=60-x%287.7%29 substitute it in eq.1

x%28159%29%2B%2860-x%287.7%29%29%283.3%29=1000....eq.1 solve for x
x%28159%29-x%2825.3%29%2B198=1000
x%28159-25.3%29%2B198=1000
x%28133.7%29=1000-198
x=802%2F133.7
x=5.99...round it
x=6
now find y
y=60-x%287.7%29
y=60-5.99%287.7%29
y=60-46.123
y=13.9