Question 414554: Need some help please. Huge final due soon.
Solve the following systems of equations
x+9y=8 (1)
x=5-9y (2)
Answer by algebrahouse.com(1659)   (Show Source):
You can put this solution on YOUR website! Need some help please. Huge final due soon.
Solve the following systems of equations
x + 9y = 8
x = 5 - 9y
Substitute (5 - 9y), in for x, into top equation
5 - 9y + 9y = 8 {substituted 5 - 9y, in for x, into top equation}
5 = 8 {combined like terms}
The variable disappeared.....most people now panic
When the variable disappears and you get a statement that is never true,
for example 5 = 8, then there is no solution.
*Also note*
When the variable disappears and you get a statement that is always true,
for example 3 = 3, then there are infinite solutions
The answer to this one is "no solution"
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