Answer:
2 (90 - x)
Step-by-step explanation:
Twice the difference between ninety and a number.
Let x be the number.
First, let's put 90 and the number into the parenthesis for its different.
Then, times it by 2 because it is twice a difference.
2 (90 - x)
Finding the value of x:
2(90 - x)
180 - 2x
180 = 2x
90 = x
