How do you simplify x7x−3+x+215x+30? Algebra Rational Equations and Functions Addition and Subtraction of Rational Expressions 1 Answer Vivek A. Jan 15, 2017 x7x - 3 + x + 215x + 30=22x - 3105x - 45 Explanation: x7x - 3+ x + 215x + 30 x7x - 3+ x + 215(x + 2) x7x - 3+115 15x + 7x - 3(7x - 3)(15) 22x - 3(7x)(15) - (3)(15) 22x - 3105x - 45 Answer link Related questions What is Addition and Subtraction of Rational Expressions? How do you add or subtract rational expressions with the same denominator? How do you add or subtract rational expressions with unlike denominator? How do you find the least common denominator for rational expressions? How do you simplify 2x+2−32x−5? How do you add 52x+3+32x+3? What is the least common denominator for 2xx−4+x4−x? How do you add 3x−2x−2+1x2−4x+4? How do you subtract 2xx2+10x+25−3x2x2+7x−15? How do you add 32x−4+xx+2? See all questions in Addition and Subtraction of Rational Expressions Impact of this question 1948 views around the world You can reuse this answer Creative Commons License