Write as a mathematical expression and solve. The sum of a number and 2 times the number is 21. Find the number.
1 answer:
Answer:
x + 2x = 21
Or
3x = 21
Step-by-step explanation:
Let the required number be x.
Two times of the number = 2x
Above statement in Mathematical form can be expressed as:

You might be interested in
I can’t comment but good luck. It looks like a practice problem.
Answer:
It is isosceles by the base angles theorem. It states that when the base angles are equal, the triangle is isosceles.
Step-by-step explanation:
unknown measure : 50°
Answer:
A. x < -8 (first option)
Step-by-step explanation:






The answer is A because its simple reading. Are you 4? Because this is easy smh