Question

1) Calculati sumele: S=1+2+3+4+.............+118+119+120; S= 2+3+6+9+12+...........+360. 2) rezolvati ecuatile. 1024:x=64; 13*x=650; x*17=323; 2*-3=7; 3x+1=10; 3) Aplic termeni: D=c*I+p,rR: 0,1,2,3,4

Answer 1

1.S=(120*121):2=14.520:2=7260
S=120(3+360):2=(120*183)+2=21962
2.1024:x=64
x=1024:64
x=16

x=650:13
x=50

x=323:17
x=19

2x=3+7
2x=10
x=5

3x=9
x=9:3
x=3