.
Please how do I solve this problem: (1) 3x + 7y = 9
(2) y = 11/7 - 3x/7
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3x + 7y = 9, (1)
y = 11/7 - 3x/7. (2)
Multiply equation (2) by 7 (both sides). You will get
7y = 11 - 3x, (3)
or
3x + 7y = 11. (4)
Now you have the system of two equations
3x + 7y = 9 (1)
3x + 7y = 11 (4)
Left sides are identical, but the right sides are different.
What does it mean? - Correct, the system has no solutions.
