Question

afla nr necunoscut 256+x=480,
x+2536=6243
x-1547=2988
7281-x=4691
x : 9=72
x×2=86​

Answer 1

Răspuns:

256+x=480.

x=480-256

x=224

Explicație pas cu pas:

x+2536=6243

x=6243-2536

x= 1007

x:9=72,x=72:9,x=8

x×2=86,x=86:2,x=43

x-1547=2988

x=2988-1547,x=1441