Convert 2/5, 1/4 and 7/10 to fractions with like denominators.
[tex]\bf{\dfrac{2\times4}{5\times4}+\dfrac{1\times5}{4\times5}+\dfrac{7\times2}{10\times2} \ \ \to \ \ \ Multiply }[/tex]
[tex]\bf{\dfrac{8}{20}+\dfrac{5}{20}+\dfrac{14}{20} }[/tex]
Since 8/20,5/20 and 14/20 have the same denominator, add their numerators to add them up.
[tex]\bf{\dfrac{8+5+14}{20} \ \ \to \ \ \ Add. }[/tex]
[tex]\green{\underbrace{\red{\boxed{\purple{\boxed{\bf{\blue{\frac{27}{20} }}}}}} \ \ \to \ \ \bf{\red{Answer}}}}[/tex]
