(-3)/(4)+(9)/(10) - addition of fractions

Solution for the given fractions

• -3/4 + 9/10 = ?
• The common denominator of the two fractions is: 20
• -3/4 = (-3*5)/(4*5) = -15/20
• 9/10 = (2*9)/(2*10) = 18/20
• Fractions adjusted to a common denominator
• -3/4 + 9/10 = -15/20 + 18/20
• -15/20 + 18/20 = (18-15)/20
• (18-15)/20 = 3/20

Solution for the given fractions

$ -\frac{3}{4 }+\frac{ 9}{10 }=? $

The common denominator of the two fractions is: 20

$ -\frac{3}{4 }= \frac{(-3*5)}{(4*5)} = -\frac{15}{20} $

$ \frac{9}{10 }= \frac{(2*9)}{(2*10)} =\frac{ 18}{20} $

Fractions adjusted to a common denominator

$ -\frac{3}{4 }+\frac{ 9}{10 }= -\frac{15}{20 }+\frac{ 18}{20} $

$ -\frac{15}{20 }+\frac{ 18}{20 }= \frac{(18-15)}{20} $

$ \frac{(18-15)}{20 }=\frac{ 3}{20} $

$ $

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