Understanding variables, expressions, and basic equation solving
Simplify the expression: 3x + 2y - x + 4y
Combine like terms by adding coefficients of the same variables
Solve for x: 2x + 5 = 15
Isolate the variable by performing inverse operations on both sides
Which is a linear equation?
Linear equations have variables raised only to the first power
Evaluate 4a - 3b when a = 5 and b = 2
Substitute the given values and follow order of operations
Solve: 3(x - 4) = 15
Distribute first, then isolate the variable