Question

{189-[34+(20+5)]}:20

Answer 1

= 6,5

Answer 2

\(\left\{189-\left[34+\left(25+5\right)\right]\right\}:20\\ =\left[189-\left(34+25\right)\right]:20\\ =\left(189-59\right):2\\ =130:20\\ =6,5\)

Answer 3

6.5

Answer 4

\(=\left\{189-\left[34+25\right]\right\}:20\\ =\left\{189-59\right\}:20\\ =170:20\\ =6,5\)

Answer 5

6,5

Answer 6

{189−[34+(25+5)]}:20=[189−(34+25)]:20=(189−59):2=130:20=6,5