|
Priorités: paranthèses > crochets > accolades | 
|
Go ! $2\cdot [4-(1-3)] = 2\cdot [4-(-2)] = 2\cdot [4+2] = 2\cdot 6 = 12$ $2-(1-2) $ = $2(1-2) $ = $-2-[1-(1-2)] $ = $2\{ 1- [1-(1-2)] \} $ = $2-\{ 1- [1-(1-2)] \} $ =
|
|
Priorités: paranthèses > crochets > accolades |
|
Go ! $2\cdot [4-(1-3)] = 2\cdot [4-(-2)] = 2\cdot [4+2] = 2\cdot 6 = 12$ $2-(1-2) $ = $2(1-2) $ = $-2-[1-(1-2)] $ = $2\{ 1- [1-(1-2)] \} $ = $2-\{ 1- [1-(1-2)] \} $ =