The absolute value of -0.3 is 0.3. So, (-0.3) + 0.9 can be seen as 0.9 - 0.3, which equals 0.6. Thealgebraic sumis the result of adding or subtracting the numbers according to their signs. In this case, since both numbers are positive, the sum ispositive.In algebra, the sum of twonumbersis obtained by adding them together. When adding a positive number and a negative number, we can think of it as subtracting the absolute value of thenegativenumber from the positive number.To find the sum of (-0.3) and 0.9, we add the two numbers together.Step 1:Writedown the numbers:(-0.3) + 0.9Step 2:Addthe numbers:(-0.3) + 0.9 = 0.6The algebraicsumof (-0.3) and 0.9 is 0.6.Therefore, the absolute value of -0.3 is 0.3. So, (-0.3) + 0.9 can be seen as 0.9 - 0.3, which equals 0.6. Thealgebraic sumis the result of adding or subtracting the numbers according to their signs. In this case, since both numbers are positive, the sum ispositive.Learn more aboutalgebraic sumshere:brainly.com/question/4458242?referrer=searchResults#SPJ2...

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