Question

[Vi văn tuấn]

1/2×25+74×1/2+1/2

Answer 1

[Sahara]

\(\dfrac{1}{2}\times25+74\times\dfrac{1}{2}+\dfrac{1}{2}\)
\(=\dfrac{1}{2}\times\left(25+74+1\right)\)
\(=\dfrac{1}{2}\times100\)
\(=50\)

Answer 2

[Trần Trọng Nghĩa]

= 1/2 x (  25 + 74 ) + 1/2

= 1/2 x 99 + 1/2

= 99/2 + 1/2

= 50