bonjour
6 x + 12 = 7 x + 5 - x + 7
6 x + 12 = 6 x + 12
x + 5 x + 10 + 2 = 6 x + 12
6 x + 12 = 6 x + 12
3 ( 2 x + 4) = 6 ( x + 2 )
6 x + 12 = 6 x + 12
a) 4 n + ( 3 n + 1) = 4 n + 3 n + 1 = 7 n + 1
b) 17 - 2 ( - 5 - x ) = 17 + 10 + 2 x = 2 x + 27
c) 13 k - ( 2 k + 4 ) * 10 = 13 k - 20 k + 40 = - 7 k + 40
d) 8 m + 4 + ( - 2 m - 5 ) = 8 m + 4 - 2 m - 5 = 6 m - 1
e) ( - 2 t + 1 ) - t = - 2 t + 1 - t = - 3 t + 1
f) 8 ( 5 x + 2 ) + 3 = 40 x + 16 + 3 = 40 x + 19
