Question

521=5×2×1-0:1:3:5+n cu verificare va rog mult urgent​

Answer 1

Răspuns:

521=5×2×1-0:1:3:5+n

521=10×1-0:1:3:5+n

521=10-0:1:3:5+n

521=10-0:3:5+n

521=100-0:5+n

521=10-0+n

521=10+n

n=521-10

n=511

verificare:

5×2×1-0:1:3:5+511=

=10×1+0:1:3:5+511=

=10+0:3:5+511=

=10+0:5+511=

=10+0+511=

=521