College Algebra (10th Edition)

$1$
Multiply the fractions first to obtain: $=\dfrac{1(3)}{2(5)}+\dfrac{7}{10} \\=\dfrac{3}{10}+\dfrac{7}{10}$ Add the fractions to obtain: $=\dfrac{3+7}{10} \\=\dfrac{10}{10} \\=1$