Question

2 + 5 - 4 ( 9 × 2 ) ÷ 2 = R + 28

Answer 1

2+5-4(9*2)/2=R+28
2+5-4(18)/2=R+28
2+5-72/2=R+28
2+5-36=R+28
-29=R+28
-29-28=R
-57=R