 |
|---|
SELECT PAGE NO.
No Books/Pages Are Available |
SELECT PROBLEM NO. FOR THE PAGE |
| PAGE: 171 | SET: Exercises | PROBLEM: 1 |
The system of equations are 
, 
and 
.
Solve the system of equations by elimination method.
Step 1:
Eliminate one variable by using two pairs of equations.
Subtract the 2nd and 3rd equations to eliminate the one variable.
Step 2:
Solve the system of two equations containing 
and 
to find value.
(Divide each side by 
)
(Cancel common terms)
Substitute into any one of the original equation to find 
value.
(Third equation)
(Substitute 
)
(Multiply)
(Subtract 
from each side)
(Apply additive inverse property: 
)
(Divide each side by 
)
(Cancel common terms)
Step 3:
Substitute values of and into one of the original equation to find 
value.
(Second equation)
(Substitute 
and )
(Multiply)
(Combine like terms)
(Add 
to each side)
(Apply additive inverse property: )
(Divide each side by 
)
(Cancel common terms)
Thereore, the solution is , 
and .
Check solutions for 
and 
values.
(Second equation)
(Substitute , and )
(Multiply)
(Add: 
)
The solution of the system is 
.
The solution of the system is .
|
"I want to tell you that our students did well on the math exam and showed a marked improvement that, in my estimation, reflected the professional development the faculty received from you. THANK YOU!!!" June Barnett |
|
"Your site is amazing! It helped me get through Algebra." Charles |
|
"My daughter uses it to supplement her Algebra 1 school work. She finds it very helpful." Dan Pease |
Simply chose a support option
  
|