👤
Bobygrigore
a fost răspuns

rezolvatii urmatoarele ecuatii.7a plus 2 egal 4a plus17.5 plus 8a egal 21 plus 4a.9 plus 3a egal 24 minus 2a, 4a minus 3 egal 11 minus 3a,3a plus 12 egal 44 minus 5a! dau coronita

Răspuns :

Andreeadianaf
7a+2=4a+17.5+8a=21+4a.9+3a=24-2a
-2-(-17.5)-(-21)-(-0.9)-(-24)=7a+4a+8a+4a+3a-2a
61.4=24a=>a=61.4:24=>a=2.5


Lunguandreea
7a+2=4a+ 17
7a-4a= 17-2
3a= 15
a= 5
5+8a=21+4a
8a-4a= 21-5
4a=16
a=4
9+3a=24-2a
3a-2a=24-9
a=15
4a-3=11-3a
4a-3a= 11-3
a=8
3a+12=44-5a
3a+5a=44-12
8a=32
a=4

Alte intrebari