Solve the equation by elimination method, using set notation of express their solutions set

7x-4y=18
4x+20y=27

good job you smart son of a gun you are smarter that einstein. 7

where did you get them? if you picked from the grass, is is probably poisonous.

step-by-step explanation:

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %