Follow BODMAS rule to solve this question, as per the order given below,
Step-1- Parts of an equation enclosed in 'Brackets' must be solved first, and in the bracket,
Step-2-Any mathematical 'Of' or 'Exponent' must be solved next,
Step-3- Next, the parts of the equation that contain 'Division' and 'Multiplication' are calculated,
Step-4-Last but not least, the parts of the equation that contain 'Addition' and 'Subtraction' should be calculated.
Given expression is,
17+21+4+2=177−? ⇒ 86/5 + 43/2 + 24/5 + 5/2 = 534/3 - ?
⇒ 86/5 + 43/2 + 24/5 + 5/2 = 178 - ?
⇒ 110/5 + 48/2 = 178 - ?
⇒ 22 + 24 = 178 - ?
⇒ 46 = 178 - ?
⇒ ? = 178 – 46
⇒ ? = 132