If  ‘–’ stands for ‘+’,  ‘+’ stands for ‘×’,  ‘×’ stands for ‘–’, then which is correct ?

22 + 7 – 1 × 8 = 158 33 × 5 – 10 + 30 = 329 7 + 28 – 3 × 52 = 147 44 – 9 + 6 × 11 = 98

7 + 28 – 3 × 52 = 147

7 + 28 – 3 × 52 = 147 After applying signs 7 + 28 – 3 × 52 7 × 28 + 3 -52 196 + 3 -52 147 = 147 (hence proved)