2^3×4^7+63 = 131135
2^3×4^7-63 = 131009
For line l parallel to line m, the interior angles on the same side of the transversal should add upto 180° or in better words, they must be supplementary.
So, we can write that,
(2x + 6)° and 130° are supplementary.
⇛ 2x° + 6° + 130° = 180°
⇛ 2x° + 136° = 180°
⇛ 2x° = 44°
⇛ x° = 22°
The value of x for which line l is parallel to line m,

And we are done !!
#CarryOnLearning....
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1. 30x-2=1x+1
28x=2x
14=x
Your answer would be 4x-7=-3(3+4x) because it only has one solution which is x= -1/8