SOLUTION: solve the following systems of equations algebraic ally and check :
3x+y=3
y=2x-7
Algebra.Com
Question 1012695: solve the following systems of equations algebraic ally and check :
3x+y=3
y=2x-7
Found 2 solutions by Alan3354, fractalier:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
3x+y=3
y=2x-7
-----
Sub for y in the 1st eqn
3x + (2x-7) = 3
5x = 10
x = 2
y = -3
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
For this system, I would recommend the substitution method...
3x+y=3
y=2x-7
Let's substitute the second equation into the first and get
3x + (2x - 7) = 3
5x - 7 = 3
5x = 10
x = 2
and then
y = 2(2) - 7 = -3
The answer is (2, -3).
Checking the first equation gives
3(2) + (-3) = 3
6 - 3 = 3
3 = 3 checks!
RELATED QUESTIONS
Please help solve this question, with work shown if possible:
solve the following... (answered by rothauserc,Boreal)
solve the following systems of linear equations using any algebraic method. please show... (answered by solver91311)
Solve the systems of equations graphically and check x-y=5... (answered by ewatrrr)
Solve the following system of equations and check. Either an algebraic or graphic method... (answered by Alan3354,ewatrrr)
Solve the following system of equations using any algebraic method
y=-3x+5... (answered by macston)
solve the following systems of linear equations using any algebraic method. If possible, (answered by Alan3354)
solve the following systems of equations 2x + y =11 3x + 4y... (answered by swincher4391)
Solve and check the following systems by substitution. Show steps. Check both... (answered by Alan3354)
solve the following systems using cramers rule:
2x-y=7
and 3x+y=13
thanks!!... (answered by ewatrrr)