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KIM [24]
4 years ago
6

Twice a first number decreased by a second number is negative 11. the first number increased by four times the second number is

negative 1. find the numbers.
Mathematics
1 answer:
iren [92.7K]4 years ago
3 0
Answer: First Number = -5,  Second Number = 1


x = first number
y = second number

║ 2x - y = -11
║ x + 4y = -1

║ 2x - y = -11
║ 2x + 8y = -2

(2x + 8y = -2) - (2x - y = -11)

9y = 9
y = 1              <<<<<< We found y

Plug y = 1 into 2x - y = -11
2x - 1 = -11
2x = -10
x = -5            <<<<<< We found x





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