Question

Please solve 1,2,3,4,5,6,13,14,18 and 21

Answer 1

1: x=30
2: n=36
3:y=50
4: w= -21
5: q=-80
6:x=-40
13:x=170
14:y=-54
18:v=-60
21:n=144

Answer 2

O.o that so hard but my big sister know how to do it