Question

Can you help meh plzzzzz????

Answer 1

Is that the Geometry or what subject is it ?

Answer 2

A. 30

Explanation:

X+40=3X-20

-X. -X

-----------------

40=2X-20

+20. +20

-------------------

60=2X

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2. 2

30=X

the periods don't matter, don't write them down.