Answer:
Twenty decreased by a number. The question says that "a number" =X.
twenty = 20
decreased = minus
by a number = X
Put this all in a line and you get...
an answer of:
20 - X.
2 and 3 are prime numbers, so it means that the greatest common factor is:
G.C.M(2;3)=2*3=6
Step-by-step explanation:
the integer that represents the opposite of a gain of 400 = - 400