Find the numbers if four times a first number is decreased by three times the second number, the result is zero. The sum of the numbers is -7.

teevaituinomakw 2022-09-16 Answered
Find the numbers if four times a first number is decreased by three times the second number, the result is zero. The sum of the numbers is -7.
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Answers (1)

kappastud98u
Answered 2022-09-17 Author has 10 answers
By what is given,
4 N 1 - 3 N 2 = 0 ... ( 1 ) , and , N 1 + N 2 = - 7 ... ( 2 ) .
( 2 ) 3 ( N 1 + N 2 ) = - 21 , i . e . , 3 N 1 + 3 N 2 = - 21 ... ( 2 ) .
( 1 ) + ( 2 ) 4 N 1 + 3 N 1 = 0 + ( - 21 ) ,
7 N 1 = - 21 N 1 = - 21 7 = - 3 , &, by (2), then, N 2 = - 4 .

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