Question

AFLA NUMERELE NECUNOSCUTE
A.538-X+821=1798
B.×+4281+3584=30 000
C.2030+×-13521=8213


Va rog faceti repede Va dau coroana

Answer 1

538 - x + 821 = 1 798

538 + 821 - 1 798 = x

x = - 439

x + 4 281 + 3 584 =30 000

x = 30 000 - 4 281 - 3 584

x = 22 135

2 030 + x - 13 521 = 8 213

x = 8 213 - 2030 + 13 521

x = 19 704