Question

Please answer and explain

Answer 1

The values of x are :
x=15
x=5
x=30
The names you should put on top of each drawings (from left to right)
Chang
Georgia
Annalisa

The work is shown below :
74+2x+4=108
78+2x=108
2x=30
x=15

9x+6=51
9x=45
x=5

2x+30=90
2x=60
x=15