5x-2y=1;2x-y=0 came r's rule
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Answer:
x = 1, y = 2
Step-by-step explanation:
Multiply each equation by the value that makes the coefficients of y opposite.
(-2). ( 2x - y) = (-2). 0
= -4x + 2y = 0
Simplify.
5x - 2y = 1 (i)
-4x + 2y = 0 (ii)
Add the two equations together to eliminate y from the system.
5x - 2y = 1
+ -4x + 2y = 0
______________
x = 1
Substitute the value found for x into one of the original equations, then solve for y
5x - 2y = 1
5×1 -2y = 1
-2y = 1 - 5
2y = 4
y = 4/2
y = 2
x = 1, y = 2
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