Question

d-250=450-120
a+320=800-120

Answer 1

D-250 = 450-120
D-250= 330
D=330+250
D=580

а+320=800-120
а+320=680
а=680-320
а=560

Answer 2

а=360

Answer 3

1)D =580,
2)А =360 .