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Mathematics 15 Online
OpenStudy (anonymous):

Simplify 4x/9 + x-10/9

OpenStudy (anonymous):

x^2 + 15 and 7/24.

OpenStudy (anonymous):

what do you mean and?

OpenStudy (anonymous):

answer

OpenStudy (anonymous):

Can you show me how you solved it please?

OpenStudy (anonymous):

adding and Subtracting Rational Expressions?

OpenStudy (anonymous):

wait forget what i put... This is right! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv Multiply the middle x term by 9/9 to get a common denominator. Then you can combine the numerators and write the expression and a single fraction.

OpenStudy (anonymous):

what middle x term?

OpenStudy (anonymous):

is this adding and subtraction rational expressions if so i can give you the answer.

OpenStudy (anonymous):

yes it is.

OpenStudy (anonymous):

4x/9+x-10/9= 4x/9+9x/9-10/9= (13x-10)/9

OpenStudy (anonymous):

how'd you get that answer?

OpenStudy (anonymous):

look at the rationals in your example.They are divided by 9. So multiply the non-rationals by 9/9 (which is 1). That would be x. Now the example becomes 4x/9 + 9x/9 -10/9 They all have the same denominator, so we can group them all over 9. (4x + 9x - 10)/9 combine like terms. (13x - 10)/9

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