0.8x+0.3y=3.8,0.4x-0.5y=0.6 apply elimation
method
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The solution is x = 4 and y = 2
Solution:
Given system of equations are:
0.8x + 0.3y = 3.8 ------- eqn 1
0.4x - 0.5y = 0.6 ----- eqn 2
Solve the system of equations
Multiply eqn 2 by -2
-0.8x + y = -1.2 ------- eqn 3
Add eqn 1 and eqn 3
0.8x + 0.3y = 3.8
-0.8x + y = -1.2
( + ) ------------------
1.3y = 3.8 - 1.2
1.3y = 2.6
y = 2
Substitute y = 2 in eqn 1
0.8x + 0.3(2) = 3.8
0.8x + 0.6 = 3.8
0.8x = 3.2
x = 4
Thus solution is x = 4 and y = 2
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