I just don't understand these last 3 problems. -.-
Can anyone help me? Please? Steps to solving would be appreciated so I can figure these out in the future!
1. How many solutions are there to the following system of equations?
2x + 5y = -11
10x + 25y = -55
d. infinitely many (I think this is the answer?)
2. How many solutions are there to the following system of equations?
5x + 3y = 7
2x - y = 2
d. infinitely many.
3. Solve the following system of equations by linear combination:
2d + e = 8
d - e = 4
a. solution is (5,-2)
b. solution is (4,0)
c. no solution
d. infinite number of solutions.