Which expression is equivalent to -5a + 12b - c + 5a - 7b + 12c after combining like terms?

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. 4x^2 + 20x + 25 = 0