Question

calculeaza b-a respectiv x-y,stiind ca:  a+b=518    b-193=291    x-y=236    x-173=346

Answer 1

b=193+291=484
a=518-b=32
x=346+173=519.
y=x-236=283

Answer 2

b=291+193 b=484 a+b=518 b=484 a=518-484=34 b-a=484-34=450 x=173+346 x=519 x-y=236