X = 7
5 + x can also be written as 5 + 7
5 + 7 = 12
Answer:
The second option: Waxing crescent - first quarter; Waning gibbous - third quarter
Answer is: Solve for x by simplifying both sides of the equation, then isolating the variable.
x = 20.2
The 3 in 350 is in the hundred place and in 403 the 3 is in the ones place