ing the useful websi pt on this paper!!!).
Percentage
A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.
Algebraic Expressions
In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.
Numbers
Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.
Subtraction
Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.
Addition
Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.
![**Problem 3:**
Here is a system of linear equations, where \( a, b, c \) are parameters in the sense that numbers can be substituted for them at any time:
\[
x - 2y + 4z = a
\]
\[
2x + 3y - 2z = b
\]
\[
x + 4y - 6z = c
\]
**a) (6 pts) Write the system of linear equations in the form \( Ax = B \).**
**b) (8 pts) Find \( A^{-1} \).** (Show your work, you may check it using the useful website, if you made a mistake, find it and fix it. So, do not make your first attempt on this paper!!!).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F47777a74-d6dd-4a73-8c05-2f13070febb4%2F7c021e4e-57a5-4f21-8e5a-d6a065eeccf8%2F2hu047.jpeg&w=3840&q=75)
First we have to represent system of linear equations in the form of
AX=B
Step by step
Solved in 10 steps with 10 images
