Maths-
SAT
Easy
Question
4x + y = 4
8x + y = 5
If (x, y) is the solution of the system of equations above, what is the value of x ?
The correct answer is: 0.25
4x + y = 4 ______(1)
8x + y = 5. subtracting, we get
-4x = -1
x = 
. substitute x in 1st equation
4(- ) + y = 4
-1 + y = 4
y = 5
) + y = 4-1 + y = 4
y = 5
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