Question

Află numerele necunoscute. a. 538-x + 821 = 1 798 b. x + 4 281 +3 584 = 30 000 c. 2030 + x - 13 521 = 8 213

REPEDE VA ROG​

Answer 1

Răspuns:

a. 538-x+821=1798

538-x=1798-821

538-x=977

-x=977-538

-x=439|*(-1)

x=-439

b. x+4281+3584=30000

x+7865=30000

x=30000-7865

x=22135

c. 2030+x-13521=8213

2030+x=8213+13521

2030+x=21734

x=21734-2030

x=19704