Question

Maria thinks of a number double it and add 5 answer is 21 write as an equation in X and solve it to find Maria's number​

Answer 1

Answer : Maria’s number is 8

2x + 5= 21

2x = 21 -5 ( taking whole number to other side of =)

2x = 16

X= 16/2

X= 8

Answer 2

The number is 8

Explanation:

2x +5 =21

2x= 21-5

2x=16

2x/2=16/2

x=8

To check

8×2=16

16+5=21