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Analyzing One-Variable Relationships in Context
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Algebra 1
One-Variable Equations
Analyzing One-Variable Relationships in Context
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Exercise 1.3 - Solution
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Return to Analyzing One-Variable Relationships in Context
From the figure, we can see that the measure of
∠
A
is
7
0
∘
and that the measure of
∠
B
is
3
x
+
7
∘
.
Since the measures are equal, we can write an
equation
.
7
0
∘
=
3
x
+
7
∘
We will now solve the equation by using
inverse operations
.
7
0
∘
=
3
x
+
7
∘
SubEqn
LHS
−
7
∘
=
RHS
−
7
∘
6
3
∘
=
3
x
RearrangeEqn
Rearrange equation
3
x
=
6
3
∘
DivEqn
LHS
/
3
=
RHS
/
3
x
=
2
1
∘