SOLUTION: This question needs to be solved with the addition/elimination method. 0.4x-0.1y=0.3 -80x+20y=40

Algebra ->  Expressions-with-variables -> SOLUTION: This question needs to be solved with the addition/elimination method. 0.4x-0.1y=0.3 -80x+20y=40      Log On


   

Question 108910This question is from textbook Intermediate Algebra
: This question needs to be solved with the addition/elimination method.
0.4x-0.1y=0.3
-80x+20y=40 This question is from textbook Intermediate Algebra

Answer by chitra(359) About Me  (Show Source):
You can put this solution on YOUR website!
The given set of equations are:

0.4x - 0.1y = 0.3 -------------(1)
-80x + 20y = 40 ---------------(2)

The first equation can be written,

4x - 1y = 3 ------------------(3)
-80x + 20y = 40 --------------(4)


Using (3) in this way in (4) we get:
y = 4x - 3

-80x + 20(4x - 3) = 40

-80x + 80x - 60 = 40

- 60 = 40

which is not possible
hence the given system of equations has no solutions

thus the solution