Răspuns :
P=158
L=4l+4dm
2l+8l+8dm=158
10l+8=158
10l=158-8=150
l=150:10
l=10 dm
L=4x10+8=48 dm
L=4l+4dm
2l+8l+8dm=158
10l+8=158
10l=158-8=150
l=150:10
l=10 dm
L=4x10+8=48 dm
P= 158dm
P =2L +2 l
L/9 =4 rest 9 ;L =4 l +9
158 =2( 4l +9 )+2 l
158 =8 l +18 +2 l
8 l +2 l =158 -18
10 l =140
l =14 dm
L =4 l +9
L=4 *14 +9
L =56+9
L =65 dm
P =2L +2 l
L/9 =4 rest 9 ;L =4 l +9
158 =2( 4l +9 )+2 l
158 =8 l +18 +2 l
8 l +2 l =158 -18
10 l =140
l =14 dm
L =4 l +9
L=4 *14 +9
L =56+9
L =65 dm