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Question 33961: directions:solve problems using two unkowns and a system of two equations.
the diffrence of two numbers is -1. if twice the first number is added to three times the second number, the result is 13. what are the numbers
Answer by fanism(39)   (Show Source):
You can put this solution on YOUR website! let the first # be x and the second # be y
x - y = -1 -- eq 1
2x + 3y = 13 -- eq 2
multifply eq 1 by 2, yields
2x - 2y = -2 -- eq 3
now, take eq2 - eq3, u will get
0 - 5y = 15
y = -3
sub y = -3 into any of the above equation,
let use eq1, u will get
x - (-3) = -1
x + 3 = -1
x = -4
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