The value is 1/2. First, you multiply both sides by 10. Then move the constant to the right. After that, you add the numbers and divide both sides by 8.
4/5x−1/10=3/10
SIMPLIFY
4/5x+−1/10=3/10
ADD 1/10 TO BOTH SIDES
4/5x+−1/10+1/10=3/10+1/10
MULTIPLY BOTH SIDES BY 5/4
(5/4)*(4/5x)=(5/4)*(2/5)
x=1/2
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