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Maths-

General

Easy

Question

$negative x plus y equals negative 3.5$
$x plus 3 y equals 9.5$
If (x, y) satisfies the system of equations above, what is the value of y ?

hint Hint:

Since there are 2 unknown variables x and y, and 2 equations then we would have a solution to the given system of equations. We perform logical algebraic manipulations to get the (x, y) pair.

The correct answer is: The value of y is 3 over 2

Step 1 of 2:
Given two equations are
$negative x plus y equals negative 3.5$
$x plus 3 y equals 9.5 horizontal ellipsis$
Now, adding (ii) with (i), we get
$left parenthesis x plus 3 y right parenthesis plus left parenthesis negative x plus y right parenthesis equals 9.5 plus left parenthesis negative 3.5 right parenthesis$
$Error converting from MathML to accessible text.$
$Error converting from MathML to accessible text.$
$Error converting from MathML to accessible text.$
Putting $Error converting from MathML to accessible text.$ in (ii), we get
$Error converting from MathML to accessible text.$
$Error converting from MathML to accessible text.$
$Error converting from MathML to accessible text.$
$Error converting from MathML to accessible text.$ is the solution that satisfies the above two equations.
Final Answer:
The value of y is $3 over 2$ .

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