Seven times a number plus three times another number equals negative one. the sum of the two numbers is negative three. what are the numbers?

Question

Mathematics

Charlie Benjamin

17 September, 01:22

Seven times a number plus three times another number equals negative one. the sum of the two numbers is negative three. what are the numbers?

+1

Answers (1)

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Tatiana Horne · Answer 1

7x + 3y = - 1

x + y = - 3 ... x = - 3 - y

7 (-3-y) + 3y = - 1

-21 + - 7y + 3y = - 1

-4y = - 1 + 21

-4y = 20

y = 20/-4

y = - 5

x + y = - 3

x - 5 = - 3

x = - 3 + 5

x = 2

so ur 2 numbers are : 2 and - 5