college math 1040

Question

TwiceTwice

a first number decreased by a second number is

negative- 16.

The first number increased by

three times three times

the second number is

6.

Find the numbers

Answer 1

The system of equations to solve is

2x - y = -16

x + 3y = 6

From the second equation, get

x = 6 - 3y

Plug this into the top equation and get

2(6 - 3y) - y = -16

Solve for y, then plug the value of y into either equation and solve for x.