There are several methods.
1. graphing, then find the intersection.
2. Substitution (take one equation and solve for one variable, substitute that into the 2nd equation)
3. Elimination. Arrange both equations in standard form, arrange so that the coefficients on one of the variables are the same and subtract the 2 equations.
4. Cramer's rule, use matrices to solve.
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a linear equation
a solution to an equation is the answer
An equation that has no solution is called an equation that has no solution.
There is one solution. To find it, divide both sides of the equation by 2. This leaves you with x=5, where 5 is your solution.