Sagot :
Answer:
The number is 8
Step-by-step explanation:
2x +5 =21
2x= 21-5
2x=16
2x/2=16/2
x=8
To check
8×2=16
16+5=21
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
2x + 5= 21
2x = 21 -5 ( taking whole number to other side of =)
2x = 16
X= 16/2
X= 8