Answer:
The answer is 35
Explanation:
if we assume x as 4 then 5(2 × 4 - 1) will be 5( 8 - 1) now if we open the bracket.. by multiplying...then 40 - 5 = 35 so the answer is 35
No, my friend has done it wrongly. As per PEDMAS, multiplication (2*4) should be done. But instead friend has did subtraction (4-1 =3) which is wrong
5*(2x - 1) = 5*(2*4 -1)
= 5*(8 - 1)
= 5*7
= 35
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