SOLUTION: Solve the systems of equations by using the substitution method. (If the system is dependent, enter a general solution in terms of c. If there is no solution, enter NO SOLUTION.)
Algebra.Com
Question 1130335: Solve the systems of equations by using the substitution method. (If the system is dependent, enter a general solution in terms of c. If there is no solution, enter NO SOLUTION.)
{5x− 4y = −17
y= 5x − 7
(x, y) =
Answer by math_helper(2461) (Show Source): You can put this solution on YOUR website!
5x-4y = -17
y = 5x-7
Substituting for y in the top equation by the RHS of the bottom equation:
5x - 4(5x-7) = -17
5x - 20x + 28 = -17
-15x = -45
15x = 45
x = 45/15 = 3 —> y = 5(3)-7 = 15-7 = 8
—
Ans: x=3, y=8
RELATED QUESTIONS
Solve the systems of equations by using the substitution method. (If the system is... (answered by josgarithmetic)
Solve the systems of equations by using the substitution method. (If the system is... (answered by josgarithmetic,ikleyn,MathTherapy,Alan3354)
Solve the systems of equations by using the substitution method. (If the system is... (answered by MathLover1,Alan3354,ikleyn)
Solve the systems of equations by using the substitution method. (If the system is... (answered by Alan3354,MathLover1)
Solve the system of equations by using the elimination method. (If the system is... (answered by josgarithmetic)
Solve the system of equations by using the elimination method. (If the system is... (answered by Alan3354)
Solve the system of equations by using the elimination method. (If the system is... (answered by MathLover1)
Solve the system of equations by the substitution method. (If the system is dependent,... (answered by Boreal)
Solve the system of equations by the substitution method. (If the system is dependent,... (answered by stanbon)