Amber could have used cross multiplication.
Have a great day!!!!
0 = x because 0 + 5 = 5 plus 2 = 7
Answer:

Step-by-step explanation:
We want to find the rational number which is equal to
.
Let
....eqn(1)
Multiply both sides by 10
.....eqn (2)
Subtract eqn (1) from eqn (2)


Divide both sides by 9.

Answer:
option 2
Step-by-step explanation: