Question

24,26,27 Repede (prin metoda grafica dau 50 de puncte + coroana

Answer 1

24)M+O=40
M-O=26
M \----\+26 Total 40
O \----\
40-26=14
14:2=7
M=7+26=33
O=7
26)(a+a+1+a+2+a+3+a+4+a+5):3=21
a+a+1+a+2+a+3+a+4+a+5=21•3=63
6a+15=63
6a=63-15=48
a=48:6=8
a+1=9
a+2=10
a+3=11
a+4=12
a+5=13
27)a+d=66
a+b+c+d=?
Sunt nr.consecutive deci:
a \----\ Total 66
d \----\+6
66-6=60
60:2=30
a=30
d=36
b=32
c=34
32+34=66
Este adevarat.