Answer:
Hi! The answer to your question is 
Step-by-step explanation:




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Assuming the +'s are actually x's 1/2 of 3 is 1.5 and 1.5 divided by 7 is 1.5/7.(answer is 1.5/7) hopefully I'm right.
D. X = 10
6x-20= 40
6x=40+20
6x=60
X=10