Evaluate $\frac{5}{6}+\frac{1}{36}$56+136.

Evaluate $\frac{3}{4}-\frac{1}{8}$34−18.

Evaluate $\frac{6}{8}-\frac{8}{9}$68−89.

Evaluate $\frac{4}{10}+\frac{7}{10}$410+710.

Simplify numerical expressions involving integers and rational numbers, with and without the use of technology