I did this test and failed. But when I reviewed it showed me the right answers... so here is the answer: C. There is no solution.
5(z-4)-z=4z-20
5z-20-z=4z-20
4z=4z
z=z
The answer is C
Answer:
Step-by-step explanation:
2x + 3y = 2
x = 2 - 3y /2
x + y = 0
substitute the value of x
+ y = 0
2 - 3y + 2y = 0
2 = y
again,substitute the value of y
x = 2 - 3y / 2
=2 - 3*2 / 2
=2 - 6 / 2
=-2