Solving equations using addition
When solving equations using addition, they will have the this form: x − b = c
Recall that ax + b = c is a linear equation.
Thus, the equation x − b = c is a linear equation with a = 1 and a negative sign in front of b.
To see this, notice that 1.x = x and − = + -
Thus, we can rewrite x − b = c as
1.x + -b = c
You can solve x − b = c in one step.
When solving one step equation of the form x − b = c, rewrite x − b = c as
x + -b = c and add b to both sides of the equation.
We will illustrate with two examples: Example #1: Solve x − 2 = 8
Example #2: Solve x − 4 = -6
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