use the elimination method to solve the system of equations choose the correct ordered pair -x + y = -2 2x - 3y = 4

How many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.) how many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.)

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Gabrielle's age is three times mikhail's age. the sum of their ages is 40 . what is mikhail's age? __ years old