= 14. Verifică egalitățile: a) 1 281 x 4 = 1 967 x 2 2 375 x 3 = 1 725 x 5 3 417 x 4 = 4 309 x 3 1 804 x 5 = 2 412 x 5 - b) 2035 x 7 = 2 849 x 5 1 452 x 3 = 5 874 x 7 3 755 4 = 6 341 x 5 1938 x 5 = 7 504 x 7 =

Răspuns:
a)
1281x4=1967x2
5124=3934 (F)
2375x3=1725x5
7125=8625 (F)
3417x4=4309x3
13668=12927 (F)
1804x5=2412x5
9020=12060 (F)
b)
2035x7=2849x5
14245=14245 (A)
1452x3=5874x7
4356=41118 (F)
3755x4=6341x5
15020=31705 (F)
1938x5=7504x7
9690=52 528 (F)
Răspuns:
a)
[tex]\bf 1~281\cdot4~=~1~967\cdot2[/tex]
[tex]\bf 5~124~\neq ~3~934~~~\boxed{\bf\red{ ~F~}}[/tex]
[tex]\bf 2~375\cdot3=1~725\cdot5[/tex]
[tex]\bf7~125~\neq~ 8~625~~~\boxed{\bf\red{ ~F~}}[/tex]
[tex]\bf 3~417\cdot4~=~4~309\cdot3[/tex]
[tex]\bf13~668~\neq~ 12~927~~~\boxed{\bf\red{ ~F~}}[/tex]
[tex]\bf 1~804\cdot5~=~2~412\cdot5[/tex]
[tex]\bf 9~020~\neq~ 12~060~~~\boxed{\bf\red{ ~F~}}[/tex]
b)
[tex]\bf 2~035\cdot7~=~2~849\cdot5[/tex]
[tex]\bf 14~245~=~14~245~~~\boxed{\bf\green{ ~A~}}[/tex]
[tex]\bf 1~452\cdot3~=~5~874\cdot7[/tex]
[tex]\bf 4~356~\neq~ 41~118~~~\boxed{\bf\red{ ~F~}}[/tex]
[tex]\bf 3~755\cdot4~=~6~341\cdot5[/tex]
[tex]\bf 15~020~\neq ~31~705~~~\boxed{\bf\red{ ~F~}}[/tex]
[tex]\bf 1~938\cdot5~=~7~504\cdot7[/tex]
[tex]\bf 9~690~\neq ~52 ~528~~~\boxed{\bf\red{ ~F~}}[/tex]