7 + 3х – 12х = 3x +1.
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Step-by-step explanation:

7 + 3х – 12х = 3x +1

7-9x=3x+1

-9x-3x=1-7

-12x=-6

x= -6/-12

cut minus from numerator and denominator

x=6/12

x=2

logv3(x+2)=1

rewrite in exponential form:

logb(x) = y is equal to b^y =x

b = 3, y = 1

now solve for x:

3^1 = x+2)

x = 3-2

x = 1

see the picture for the graph.