Prove: Ill m
3
1
2
STATEMENT
REASON
1.21 and 22 are supplementary angles 1. Given
2 m2 1 + m2 = 180°
2.
3 21 and 23 are supplementary angles 3. Exterior sides in opposite rays
4
4
5. m_1 + m2 2 = m_1 + m23
5
6
6
7. All m
7

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2

you didn't give me the choices, so i will just give you the graph so you can look at your choices and choose the right one.

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

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