Question

Aflați numarul necunoscut
Dau 4 stele la cei 5​

Answer 1

x:256=15

x=15×256

x=3.840

203*x=203

x=203:203

x=1

2×X=408

x=408:2

x=204

6459+x=9823

x=9823-6459

x=3.364

(x-128)-676=1835

x-128=1835+676

x-128=2.511

x=2.511+128

x=2.639

x:2:14+(64+36):10=17

x:2:14+100:10=17

x:2:14+10=17

x:2:14=17-10

x:2:14=7

x:2=7×14

x:2=98

x=98×2

x=196

2.280:x-40:2=40

2.280:x-20=40

2.280:x=40+20

2.280:x=60

x=2.280:60

x=38