Answer
All real numbers
Work Step by Step
0.06(x+5)=0.03(2x+7)+0.09
100(0.06(x+5))=100(0.03(2x+7)+0.09)
6(x+5)=3(2x+7)+9
6x+6(5)=6x+3(7)+9
6x+30=6x+21+9
6x+30=6x+30
6x-6x+30=30
30=30
Therefore, this equation is true for all real numbers.