Răspuns :
Răspuns:
x+x+2+x+2+2= 3x + 6 =561 => 3x=555 => x=185
x+2=187
x+4=189
x+x+2+x+2+2+x+2+2+2+x+2+2+2+2+x+2+2+2+2+2+x+2+2+2+2+2+2 = 350 = =
7x +42 = 350 => 7x =308 => x=44
x+2=46
x+2+2=48
x+2+2+2=50
x+2+2+2+2=52
x+2+2+2+2+2=54
x+2+2+2+2+2+2=56
x+28+x=128
2x+28=128
2x=100 => x=50
x+28=50+28=78
Răspuns:
prima problemă
.|.........| a
|...........|+2/b
|.............|+4/c 651
651- (2+4)=651-6=645 suma segmentelor egale
645÷3=215 primul nr
215+2=217 al doilea nr
215+4=219 al treilea nr
a doua problemă
|.......|. 1
|........|+2
|.........|+4
|.........|+6
|.........|+8
|........|+10
|.........|+12
=350
350-2-4-6-8-10-12=308 ,(Am egalat părțile)
308÷7=44 primul nr
44+2= al doilea nr
44+4=48 al treilea nr
44+6=50 al patrulea nr
44+8=52 al cincilea nr
44+10= 54 al șaselea nr
44+12=56 al șaptelea nr
a treia problema
|.......|
|........|........| 28 = 128
128-28=100 (egalarea segmentelor
100÷2=50 primul nr
50+28=78al doilea nr