Tip
Algebra is a form of mathematics that uses variables, expressions, equations, and inequalities to represent situations and to solve problems. A variable is a letter, like x, which represents a number or quantity.
Sample Problem
10 + 2x = x + 1
What is the solution to the equation above?
Answer Options
(A) 10
(B) 11/3
(C) 3
(D) 1/3
(E) −9
View Correct Answer
(E) -9
Start with the given equation 10 + 2x = x + 1
10 + x = 1
x = −9
