Respuesta :

vaarun5
X + 20 = 4X - 7
X = Current Age
3X = 27
X = 9
The child’s current age is 9 years old
Vividerla

Answer:

They are 9

Step-by-step explanation:

Their current age will be represented by x

x + 20 = 4x - 7

-20 -20

x = 4x - 27

-4x -4x

-3x = -27

—— ——

-3 -3

x = 9