One number is eight more than twice another and their sum is negative 13 what are the numbers

Answer 1

Let X = first number

Let Y = second number

X = 2Y + 8

X + Y = -13

Using substitution

2Y + 8 +Y = -13

3Y + 8 = -13

3Y = -21

Y = -7

X = 2(-7) + 8

X = -14 + 8

X = -6

Checking: -6 + -7 = -13

The two numbers are -6 and -7