Question

Can you do 11 12 and 13 please?​

Answer 1

11.3x=33(vertically opposite angle)

x=33/3=11

12.117=4x-11(vertically opposite angle)

117+11=4x

x=128/4=32

13.4x-7+x+16=68(given)

5x=68+7-16

5x=59

x=59/5