One number is four more than a second number. Two times the first number is 12 more than four times the second number. Answers: 1 and -3 3 and -1 2 and -2 -10 and -14

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asked Sep 15, 2021 120k views

4 votes

One number is four more than a second number. Two times the first number is 12 more than four times the second number.

Answers:
1 and -3
3 and -1
2 and -2
-10 and -14

Mathematics
college

Arnaud Geotribu asked

by Arnaud Geotribu

7.4k points

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1 Answer

2 votes

Answer:

Explanation:

$X_1 = 4+X_2\\\\2X_1 = 12 + 4X_2\\\\2*(X_1) = 2(4+X_2)\\2X_1 = 8 + 2X_2\\\\8 + 2X_2 = 12 + 4X_2 \\-2X_2 = 4\\X_2 = -2\\\\X_1 = 4 - 2\\X_1 = 2\\\\2, -2$