# Algebra 2

Is the solution to this rational expression extraneous?
The problem: (2x-3)/7 -(7x)/14
My teacher wants to know if the solution is extraneous and I know I have to plug my answer back into the expression to check but I still don't understand.

1. Steve

an expression has no solution.
An equation has a solution.

Plugging in x = -9/4 results in a value of 3/56.

Not sure whether that's what you want. Leaving in x as-is, the expression evaluates to

(-3x-6)/14

2. ehab

Determine Activity of Ca and Cl ions in a solution containing 500 g of a solution of 0.925 g of calcium chloride

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