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What is the answer for this equation 2x-y equals 3and x plus y equals 6?
Wiki User
∙ 13y ago
A system of equations?
2X - Y = 3
X + Y = 6
I will try substitution. Express one variable in terms of the other ( use X + Y = 6 )
X + Y = 6
Y = - X + 6
insert into other equation
2X - ( - X + 6) = 3
2X + X - 6 = 3
3X = 9
X = 3
-------
put that back into one of the equations
(3) + Y = 6
Y = 3
-------
check both equations
2(3) - (3) = 3
6 - 3 = 3
3 = 3
first equation checks
(3) + (3) = 6
6 = 6
Both equations check
X = 3
Y = 3
are both true solutions for this system of equations
Wiki User
∙ 13y ago
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