Question

Calculati numarul necunoscut. 2100+ d+2000- 350=15575 . e- 450+623- 23=1000. f- 12450+34500-500=4000.​

Answer 1

Răspuns:11.825,850,42.450

Explicație pas cu pas:

2.100+d+2.000-350=15.575

2.100+d+2.000=15.575+350

2.100+d+2.000=15.925

2.100+d=150925-2.000

2.100+d+13.925

d=13.925-2.100

d=11.825

e-450+623-23=1.000

e-450+623=1.023

e-450=1.023-623

e-450=400

e=850

f-12.450+34.500-500=4.000

f-12.450+34.500=4.500

f-12.450=34.500-4.500

f-12.450=30.000

f=30.000+12.450

f=42.450

Answer 2

Răspuns:2100+d+2000-350=15575=>2100+d+2000= 15.925(15575+350)=>2100+d=13.925(15925-2000)=> 2100+d=13925

d=13925-2100

d=11.825

e-450+623-23=1000

e-450+623=977(1000-23)

e-450= 354(977-623)

e=450+354

e=804

f-12450+34500-500=4000

f-12450+34500=4500(4000+500)

f-12450=30000

f=30000+12450

f=42450

Explicație pas cu pas: