Eight times a number plus five times another number is -13. the sum of the two numbers is 1. what are the numbers?

1 Answer
May 18, 2018

Numbers are 6 and 7.

Explanation:

x = 1st Number
y = 2nd Number

8x+5y=13
x+y=1

Solving 2nd Equation for y:
y=1x

Substitute into 1st Equation:
8x+5(1x)=13
8x+55x=13
3x+5=13
3x=18
x=6

Solve for y:
y=1(6)=7