fraction_arithmetic: Basic Arithmetic with Fractions
In mrdwab/mathrrr: Basic School-type Math in R

Functions for doing basic arithmetic with fractions.

add_fractions(x1, x2)

subtract_fractions(x1, x2)

multiply_fractions(x1, x2)

divide_fractions(x1, x2)

x1 %f+% x2

x1 %f-% x2

x1 %f*% x2

x1 %f/% x2

`x1`	The first fraction to be used.
`x2`	The second fraction to be used.

# Use as a function
add_fractions("1/2", "1/4")

# Use with the defined infix operator
"1/8" %f+% "2/3"

"1/2" %f/% "1/2"

# Infix operators can be chained
# Operations go from left to right
"-2" %f-% "1/2" %f+% "2 1/3"

# Use parentheses to control order of operations
"-2" %f-% "1/2" %f+% "2 1/3" %f*% "2"

"-2" %f-% "1/2" %f+% ("2 1/3" %f*% "2")