92.131
Lecture 2
1 of 15
Ronald Brent © 2010 All rights reserved.
Solving Equations of Degree 1 (Linear Equations):
Definition:
The equation
0
=
+
b
x
a
is called an equation of degree 1.
Example: Solve for
x
:
0
25
5
=
−
x
.
25
0
25
25
5
+
=
+
−
x
,
Or
25
5
=
x
.
Dividing both sides by 5:
5
25
5
5
=
x
,
giving
5
=
x
.
Easy!
Check the answer! Substitute
5
=
x
back into the original equation.
0
25
5
5
=
−
⋅
.

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