Question

if sum of twice of any number and 5 is 21. find that number​

Answer 1

Answer:

By twice, we mean you add it twice, or ×2. So the sum between x & 5 is simply x + 5, and we're multiplying that by 2. ... This tells us that whatever x + 5 turns out to be, we make twice that; and if we were to plug in a number for x, Order of Operations tells us to find the sum before we multiply by two.

Answer 2

Answer:

Step-by-step explanation:

2(x+5)=2

x+5=1

=-4