Algebra for all the Grades

Introduction to 9^th grade algebra problems:
9^th grade algebra is an Intermediate algebra problems; algebra is the subdivision of mathematics relative to the study of the rules of relations and operations, and the constructions arising from them, together with equations, algebraic expressions, conditions, and polynomials.
It is a number is subtracted ,added or multiplied or divided on both the sides of the scale. In algebra problems numbers are considering as constants.

9th Grade Algebra Problems:

Given the equation

7(-3x - 2) - (-x - 6) = -4(5x + 5) + 12
Multiply factors.
-21x - 14 + x + 6 = -20x - 20 +12
Grouping the terms do you need online algebra tutor.

-20x - 8 = -20x - 8
Add 20x + 8 to both sides, the above equation becomes
0 = 0
All real values are solution to this equation.