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26 votes
Find x so that l || m.

Find x so that l || m.-example-1
User Magnus Persson
by
3.4k points

2 Answers

15 votes
15 votes

Answer:

20

Explanation:

Since l ll m

( 3x + 10 ) and ( 4x - 10 ) are alternate exterior angles,

Property of parallel lines ( ll ) : -

Alternate exterior angles are equal.

4x - 10 = 3x + 10

4x - 3x = 10 + 10

x = 20

User Anandharshan
by
2.9k points
14 votes
14 votes

Hello,

Answer:

x = 20

Explanation:

3x + 10 = 4x - 10

⇔ 4x - 3x = 10 + 10

⇔ x = 20

User Sachin Janani
by
2.6k points