In the last several weeks, 42 days saw rain and 67 days saw high winds. In that same time period, 13 days saw both rain and high winds. How many days saw either rain or high winds?

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}

∈3,600

step-by-step explanation:

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: