Question

1. Calculati afland factorul comun

a) 7a+7b=? b)18×24+82×24=? c)103×3001-3001-102×3001=? d)181×12-11×181=? e)4173×9+4173=? f)2018×1005-1004×2018-2018​

Answer 1

a. 7(a+b)
b. 24(18+82)
c. 3001(103-1-102)
d. 181(12-11)
e. 4173(9+1)
f. 2018(1005-1004-1)

Answer 2

Răspuns:

a) 7a+7b=7(a+b)

b)18×24+82×24=24(18+82)=24×100=2400

c)103×3001-3001-102×3001=3001(103-1-102)=3001×0=0

d)181×12-11×181=181(12-11)=181×1=181

e)4173×9+4173=4173×(9+1)=41730

f)2018×1005-1004×2018-2018​=2018(1005-1004-1)=2018×0=0