Question

Afla numarul necunoscut:a)×+3800=5000;b)a-4700=3839C)4112-a=2672d)a×9=45 ;c=23;64:d=4​

Answer 1

Răspuns:

a)x+3800=5000

×=5000-3800

x=1200

v:1200+3800=5000

b)a-4 700=3839

a=3839+ 4 700

a=8 539

v:8 539-4 700=3 839

c)4112-a=2672

a=4 112-2 672

a=1 440

4 112-1 430= 2 672

d)ax9=45

a=45:9

a=5

v:5×9=45

e)64:d=4

d=64:4

d=16

v:64:16=4