What 3 times the absolute value of 5-4a - 10=-1

3║5-2a║-10=-1

3║5-2a║-10+10=-1+10 addition property

3║5-2a║=9

3/3║5-2a║=9/3 division property

║5-2a║=3

Positive negative

5-2a=3 5-2a=-3

5-5-2a=3-5 5-5-2a=-3-5 subtraction property

-2a=-2 - 2a=-8 simplified

-2/-2a=-2/-2 - 2/-2a=-8/-2 division property

a=1 a=4

Solutions: a=1,4