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Mrac [35]
2 years ago
8

Find x so that l || m.

Mathematics
2 answers:
poizon [28]2 years ago
7 0

Hello,

Answer:

x = 20

Step-by-step explanation:

    3x + 10 = 4x - 10

⇔ 4x - 3x = 10 + 10

⇔ x = 20  

o-na [289]2 years ago
5 0

Answer:

20

Step-by-step explanation:

Since l ll m

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

<u>Property of parallel lines ( ll )</u> : -

Alternate exterior angles are equal.

4x - 10 = 3x + 10

4x - 3x = 10 + 10

x = 20

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